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FITS 1995 Dodge Ram Pickup
Tow Ready Tail Light Isolating Diode System with 4-Pole Connector

Tow Ready Tail Light Isolating Diode System with 4-Pole Connector

Item # TR118821
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Tow Bar Wiring
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1995 Dodge Ram Pickup

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TR118821 - Universal Tow Ready Splices into Vehicle Wiring
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The best technical support and full tow bar wiring installation instructions. Lowest price Ram Pickup tow bar wiring guarantee and expert service. Dodge Ram Pickup, 1995 tow bar wiring by Tow Ready are available from etrailer.com. For expert service call 800-298-8924 to order your Tow Ready Tail Light Isolating Diode System with 4-Pole Connector part number TR118821, or order online at etrailer.com.
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  • Reviews (76)
  • Q & A (86)
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1995 Dodge Ram Pickup - Tow Ready Tail Light Isolating Diode System with 4-Pole Connector

  • Diode Kit
  • Splices into Vehicle Wiring
  • Tow Ready
  • Tail Light Mount
  • Universal

This combined diode system features a Y-harness that allows your RV to power the lights on your towed Dodge Ram Pickup without the Dodge Ram Pickup sending electrical feedback to the RV. The 2-diode system does the work of 4 and protects both electrical systems.


Features:

  • Kit includes everything required to wire vehicles with a 2-wire system for towing behind a motor home
    • Y-Harness with 1 driver's-side and 1 passenger's-side diode
      • Each diode contains a tail light and combined turn and stop feed
    • 4-Pole flat connector extension
      • Runs along your tow bar
      • Connects RV wiring system to the Y-harness
    • 8 Wire connectors, 1 ring terminal and 4 zip-ties
  • System connects your RV turn signals, running lights and brake lights to your towed vehicle's lights
  • Mounting bracket for 4-way flat connector (18144) sold separately
  • 1-Year limited warranty


Tow Ready Tail Light Isolating Diode 2 wire to 2 wire diagram

Tow Ready Tail Light Isolating Diode 2 wire to 3 wire diagram

Please note for 3-wire system on towed vehicle: With this kit, the towed vehicle's brake lights will function as both the brake and turn lights. A wiring converter (118158; sold separately) and 2 additional diodes (also sold separately) will be needed if you want to retain separate turn and brake signals.



118821 Tow Ready Tail Light Isolating Diode System with 4-Pole Connector

Installation Details TR118821 Installation instructions

California residents: click here



Customer Reviews

Tow Ready Tail Light Isolating Diode System with 4-Pole Connector - TR118821

Average Customer Rating:  4.9 out of 5 stars   (75 Customer Reviews)

This combined diode system features a Y-harness that allows your RV to power the lights on your towed vehicle without the vehicle sending electrical feedback to the RV. The 2-diode system does the work of 4 and protects both electrical systems.

- TR118821
by:

I went at this not knowing quite what I was getting. Upon receiving it, I thought I did the wrong thing. Then I watch the video provided by etrailer, and I am very pleased at what I have. I will comment more after the installation. 664259



- TR118821
by:

I used this product with Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector Item # C56407 in order to prevent splicing into the vehicle wiring harness. It was more expensive but it created a plug and play solution for my gladiator Jeep. Follow the videos to a t and you cannot go wrong also follow the attached diagram if you are going use my trick or wire by splice. It will save you some trouble shooting time. 740137



- TR118821
by:
2019 Jeep Cherokee

Excellent quality. eTrailer's online installation video showing how to install this on my 2019 Cherokee was exactly what I needed. I would have hired this out along with the tow plates but I'm confident I can do it myself with eTrailer's online help. 586010



- TR118821
by:
2003 Chevrolet Suburban

Would have went much quicker and been more convenient if the kit would have supplied male and female ends to mate to the ones that come on the wiring. If you dont have them you will need them or cut the ones off the kit a use a splice. Pretty straightforward installation on 03 suburban. 49803



- TR118821
by:

Very easy install for a novice -- 20373



- TR118821
by:
2016 Chevrolet Silverado 1500

Very good product, easy to install 493421



- TR118821
by:
2018 Jeep Wrangler

Excellent lighting kit for flat towing another vehicle, worked great and easy install on my 2018 Jeep Wrangler JL 521456



- TR118821
by:

I purchased this kit for my 2008 Smart car dingy. The system was easy to install as per instructions and has been working great. I would recommend this kit to a friend. 607102



- TR118821
by:

Followed directions and completed job in a little over 4 hours. had trouble reinserting some pins in difficult locations. Later in the month I installed the wiring tow package. Goofed up and crossed a wire and it took me two days to get back under the truck and rewire. all is working great according to directions...……. I will use etrailer again, good service, great service representatives...……..jt 664497



- TR118821
by:
2000 Nissan Sentra

Very easy installs. Both items seems to be exactly what I needed and a very cost effective solution provided by David G. Thank you and a pleasure doing business with you and your team members. 548740



- TR118821
by:
2018 Jeep JK Wrangler

easy to hook up but have not used it yet ...will let ya know in may 610538



- TR118821
by:

Product was great and the installation instructions was very easy , it took me about an hour to hook up everything. So throw away those magnetic lights with wires hanging all over your car (LOL) . Thanks, John 430410



- TR118821
by:
2018 Chevrolet Volt

Good product but the instructions are worthless. If you are not familiar with twelve volt DC power, have someone else do it. 612773


Comments
If you use the provided link, you can see a video of the product being installed. The process will vary from vehicle to vehicle, but the video will give you a good overview of the procedure.
-- Mike L - 03/19/2019

50749

- TR118821
by:

Very easy installation. Customer service was very helpful in making sure I ordered the correct product for what I wanted to do. 332441


Comments
All of the products have been very useful and performed perfectly.
John M - 01/14/2018

32971

- TR118821
by:

I bought this to hook up my jeep to my RV this arrived early easy to wire and install 829161



- TR118821
by:

Simple install on my Smart Car. Using the factory taillights vs. magnetic or tow truck style was a must for me. 824359



- TR118821
by:

Went easy hook up 824114



- TR118821
by:

Just received the kit and will install Saturday 6/27/2020. Will let you know how it goes 822158



- TR118821
by:

Emily from Etrailer know her stuff and got me the right parts first time. It was not too difficult to install either. 818158



- TR118821
by:

Works as promised. It took a while to i nstall. 818069



- TR118821
by:
2019 Ford Ranger

good price very easy to install. 815704



- TR118821
by:
2007 Jeep Commander

Great products and good prices with excellent customer service. 814400



- TR118821
by:

Etrailer’s website has great descriptions on their products. If the website tells you a product will work for your vehicle, you can be sure it will work as described. And again on this order, shipping was on time and what I I ordered. 808414



- TR118821
by:

Easy to install directions are pretty straight forward took me about an hour and that's just because I'm fairly picky about wire placement and making sure everything's tucked up in neat 806778



- TR118821
by:
2008 Jeep Patriot

I am just in the process of installing this. It appears to be just what I need to easily get signal lighting functioning from my motorhome to my towed vehicle without interference between vehicles. It is a superior solution compared to the magnetic lights I was attaching each time I towed this car that would blow off and break unexpectedly. 806180


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Show More Reviews

Ask the Experts about this Tow Ready Tow Bar Wiring

  • How to Isolate Stop Light Signal for 3rd Brake Light on 2017 Ford Fusion
    Thank you for all of the information about the wiring you are using for flat towing your 2017 Ford Fusion. If you are using the Curt 2-To-3-Wire Tail Light Converter # C56196 in conjunction with a wiring kit like the Tow Ready # TR118821 it should work properly to isolate the 3rd brake light signal but you need to make sure that you are connecting the right and left turn wires to something on the output side. A common misconception is that you can just cap those wires off but when I've...
    view full answer...
  • Separating Out a Combined Brake Light and Turn Signal to Have Separate Turn Signals and Brake Lights
    We do have converters that do separate out the combined brake light and turn signal but # TR118821 is not one of them. What you can use instead is tail light converter # 118158 or # C56196. They both do the same thing. The white input wire is ground (earth), yellow is combined left turn signal and brake light, and green is combined right turn and brake light. On the output side you will have the yellow wire for left turn signal only, green for right turn signal only, and red for brake...
    view full answer...
  • Comparing Tow Ready and Roadmaster Diode Wiring Kits for Flat Towing
    The biggest difference between the Tow Ready Tail Light Isolating Diode System # TR118821 and the Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154 is that Tow Ready created their wiring kit with quick disconnects so if you ever get a new vehicle you can take the kit with you. The Roadmaster option can also be removed but you would have to splice all of the wiring again as the quick disconnects don't match up the way the Tow Ready option does. Both are great options and I'm sure...
    view full answer...
  • Custom Tow Bar Wiring Harness for Flat Towing 2008 Jeep Commander Behind Motorhome
    For your 2008 Jeep Commander, the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles, part # HM56205 is what you are looking for. This harness easily plugs into your vehicle's existing wiring, located behind your Jeep's tail light assemblies. No cutting, tapping, or splicing is required. If your motorhome uses a standard 7-way connector, you can use coiled adapter # 787196 to connect to the 4-Way on # HM56205. With this harness hooked up for flat towing, your Jeep's lighting system...
    view full answer...
  • Will Tow Ready Tow Bar Lighting Kit # TR118821 Fit 2018 Jeep Wrangler JL Unlimited
    Yes, the Tow Ready Tow Bar Lighting kit part # TR118821 that you referenced would work great on your 2018 Jeep Wrangler Unlimited. It is perfectly compatible with LED taillights as well.
    view full answer...
  • Correct Tail Light Harness to Flat Tow 2020 Ram 1500 4WD
    The Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821 (confirmed to fit your 2020 Ram 1500) ,draws the power from the RV in order to activate the turn signals, running lights and brake lights on your Ram, so the towed vehicle's battery being disconnected wouldn't pose a problem. That being said, based on the information under the "Recreational Towing" section in your owner's manual (pp. 423-427), your Ram's battery, does not need to be disconnected when flat...
    view full answer...
  • Using C56407 Trailer Wiring w/ TR118821 Taillight Diode System While Flat Towing 2019 Jeep Wrangler
    In order to install the # TR118821, you will need to do a little splicing but the easiest and safest way to do that would be to tap into the wires on the Curt # C56407, the procedure for this is shown in the instructions for the # TR118821, which I've linked for you. Installing in this manner will not harm the trailer wiring harness in any way. I've linked to some videos that you might find helpful.
    view full answer...
  • Wiring Diagram for Installing 3-Wire Style Diode Tow Bar Wiring Kit
    I attached a diagram for the 3 wire install of the Roadmaster kit part # 154-792-118158 which can be used as a guide for installing the part # TR118821 as well.
    view full answer...
  • How To Use the Tow Ready Tail Light Isolating Diode System with 7-Way On Motorhome
    If you wanted to use the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector part # TR118821 with a 7-way trailer connector on the motorhome you'd need an adapter. If you wanted to also upgrade the umbilical that goes between the motorhome and toad you can use the Wesbar Coiled Adapter part # 787196 which also doubles as the adapter. The Mounting Bracket 4-Pole Flat part # 18144 can then be used to secure the 4-way on the Tow Ready harness.
    view full answer...
  • Can Tow Ready Tail Light Diode System # TR118821 be Used with Blue Ox Patriot on 2016 Jeep Wrangler
    Yes, the Tow Ready Tail Light Isolating Diode System # TR118821 referenced in your question, which is confirmed to fit your 2016 Jeep Wrangler, will work great with the Blue Ox Patriot Braking System # BRK2016 in place. You will not need to worry about any feedback from the vehicle. In order to ensure proper operation though you will need to add the Brake-Lite Relay Kit # RM-88400 so that the Jeep's brake signal doesn't override the turn signal from the RV when applying the brakes during...
    view full answer...
  • Install Instructions for Tow Ready Tail Light Isolating Diode System TR118821
    I attached the two sheets of the install instructions for the Tow Ready Kit part # TR118821 that you referenced.
    view full answer...
  • Best Flat Tow Wiring Harness for a 2010 Honda Fit
    In regards to the Tow Ready Tail Light Isolating Diode System part # TR118821 and the Roadmaster Universal Hy-Power Diode Wiring Kit part # RM-154, the Tow Ready kit will be easier to install as more of the wiring connections are already made for you but the Roadmaster kit takes up less space because the diodes are physically smaller. That is really the only difference between them. In regards to the Roadmaster Tail Light Wiring Kit for Towed Vehicles part # RM-152-LED, there will be...
    view full answer...
  • How Difficult is it to Install the Tow Ready Tail Light Isolating Diode System # TR118821
    As long as you are used to doing your own work on your vehicle, most of the lighting systems that we have are fairly easy installs. The Tow Ready Tail Light Isolating Diode System # TR118821 will install on your 2017 Chevrolet Spark by splicing the current wiring which send the left brake and left turn, right brake and right turn, and tail lights into the diodes on the Tow Ready System. See attached photo for for illustration.
    view full answer...
  • Locating Correct Wires on 2019 Jeep Cherokee to Install Tow Ready Tail Light System # TR118821
    The best method for locating the correct wires to splice into on your 2019 Jeep Cherokee when installing the Tow Ready Tail Light Diode System # TR118821 is to simply test them using a circuit tester like # 40376. Going by wire color alone isn't always a good idea as vehicle manufacturers tend to switch up the wire colors used at the factory. What you will want to do is remove the tail lights so you can access the wiring. Then you can have a buddy run through the lighting functions in the...
    view full answer...
  • Diode Kit Tow Bar Wiring/Lighting Kit Recommendation for 2019 RAM 1500
    Yes, we have confirmed that the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821 that you referenced is a fit for your 2019 Ram 1500 with LED taillights. I attached an install video that shows a similar diode tow bar wiring kit part # RM-15267 installed on a 2019 Ram 1500 just like yours to use as a guide for the install as well. You might prefer this kit too as it comes with an umbilical cord to go from the tow vehicle to the towed.
    view full answer...
  • Willd Tow Ready Tail Light Isolating Diode System Protect Both Motorhome and Towed Vehicle Wiring
    Yes, the Tow Ready Tail Light Isolating Diode System # TR118821 does work to protect both the electrical on your motorhome and your 2013 Nissan 370z (that you input for your vehicle info). Since your motorhome has combined wiring and your 370z has separate (3-wire system) wiring this means that the brake lights on your 370z will function both as the brake and turn lights (when flat towing). If you would like to retain the separate wiring for when you are flat towing then you would also...
    view full answer...
  • Troubleshooting Tow Ready Tail Light Isolating Diode System TR118821
    If you have your input and output connections correct on the Tow Ready Tail Light Isolating Diode System # TR118821 and it still does not function I suggest checking the white ground wire with ring terminal is affixed to a clean bare metal point to ensure a good connection. Even if all the other clip on connectors are properly installed without a strong ground the harness won't function. You can try sanding off the grounding point to expose clean bare metal and reattaching the ground...
    view full answer...
  • How Long are the 4-Way Wiring Harnesses of Tow Ready Flat Tow Diode Kit # TR118821
    There are two sections of 4-way wiring on the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821 that you referenced. There's a section that attaches to the converter boxes which measures 25 feet and there's a 60 inch long section that spans from the front of the towed vehicle to the wiring at the rear of the tow vehicle.
    view full answer...
  • Does Tow Ready Tail Light Isolating Diode System with # TR118821 Fit 2010 Hyundai Elantra Touring
    The wording of our fitguide is a bit confusing but the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821 that you referenced does fit your 2010 Hyundai Elantra Touring model. It's listed in both places of the fitguide as a fit for the touring models and a fit for non-touring models so depending on where you see it as you are scrolling it's easy to be confused.
    view full answer...
  • Wiring Kit to Flat Tow a 2017 Ford Focus SEL Hatchback with Separate Wiring
    The differences between the two custom wiring kits you mentioned is the vehicles they are designed to fit. However, neither of them fit your 2017 Ford Focus. Part # HM56200 fits a Jeep Wrangler JK from 2017 and 2018 and part # HM56007 fits a Focus but it's the sedan model from 2012 to 2014. These kits offer a simple plug-in installation behind the vehicle's tail lights. Unfortunately, this option isn't available for your 2017 hatchback. Instead I recommend part # TR118821 that does...
    view full answer...
  • Will Tow Ready Diode System # TR118821 Work On 1998 Geo Tracker
    Yes, the Tow Ready Tail Light Diode System # TR118821 referenced in your question will work great on your 1998 Chevy Geo Tracker. This is a combined diode system that will let you tap into the signal light circuits on your Tracker so they will accept those from the RV while being towed. It includes a 4-Way connector and extender loop to connect with a 4-Way on the RV. I have attached a short video review along with the written installation manual that you can check out as well. In...
    view full answer...
  • Correct Converter To Add Third Brake Light To a Trailer
    In order to separate the stop light circuit on your trailer for use with a third brake light you will need to use the Pacer Performance 3rd Brake Light Logic Module part # PP20-702, not the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector part # TR118821. Then for a third brake light, I like the UltraThin ID Light Bar for Trailers part # MCL70RB but have attached other options for you as well.
    view full answer...
  • Installation of Tow Ready TR118821 Flat Towing Wiring Harness on 2020 Jeep Gladiator
    If the 4-pole/7-way on your Gladiator is already functional, you wouldn't need to add a 4 pole harness like the Curt # C56407. Adding the flat towing wiring harness like the # TR118821 wouldn't interfere with the factory trailer tow wiring. I've provided a wiring diagram showing how the # TR118821 installs as well as to a video showing a typical installation.
    view full answer...
  • Solution for Getting Signal Lights for Flat Towing Ford Explorer without Splicing into Wiring
    I may have a solution for you, however there isn't a custom plug-and-play tow bar wiring option available for your 2013 Ford Explorer like the harness you installed on your friend's Focus. If you don't want to mess with the factory wiring at all on your Explorer another option is a removable tail light kit like the Optronics Heavy Duty Magnetic Tow Lights # TL21RK. This will provide you with the needed tail lights for towing your Explorer without having to splice into its wiring. The...
    view full answer...
  • Recommended Setup when Flat Towing a 2015 GMC Canyon with a 2008 Fleetwood Excursion
    In order to flat tow your 2015 GMC Canyon, I recommend checking your owners manual for any flat towing restrictions or procedures. With that said, you will need 5 components to complete your flat towing setup - base plates, tow bar, safety cables, tow bar wiring and a supplemental braking system. Since you are needing tail light wiring, I would go with the Tow Ready tail light isolating diode system with 4-pole connector # TR118821. To complete your flat towing setup you will also...
    view full answer...
  • Will 4-Flat and Tow Bar Wiring Both Work on 2018 Jeep JL Wrangler Unlimited
    The Curt T-Connector Vehicle Wiring Harness # C56407 and Tow Ready Tail Light Isolating Diode System # TR118821 will absolutely work together on your 2018 Jeep Wrangler JL Unlimited to give you a 4-way at the rear of your Jeep to tow your trailer and at the front to flat tow. The reason for this is the Curt connector will plug into the tail light housing while the Tow Ready will splice in; I recommend starting with the Curt and then installing the Tow Ready. I have added a link to an...
    view full answer...
  • Wiring Tow Ready Tail Light System for 2017 Ram 3500 With Combined Wiring
    Your 2017 Ram 3500 is a 2-wire combined system which means a wire for the turn and brake, and another for the tail light. So when when wiring the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821 you need to do so like in the following diagram. I have also added a link to the instructions and a video install.
    view full answer...
  • How To Install the Tow Ready Tail Light Isolating Diode System On a 2018 Jeep JL Wrangler
    I do have an option for you but I would not be able to provide the exact wire colors to splice into for the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector part # TR118821. In order to find out which wire has which function you will need to test the wires behind the taillights while the circuits are active as that will then tell you which wire has which function. I have attached a sample video on this process to show how it is done.
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Written by:
Tyler C
Video by:
Joshua S
Video by:
Kathleen M
Video by:
Jonathan Y
Video Edited:
Jacob T
Video Edited:
Dustin K
Video Edited:
Chris R
Updated by:
Laura H
Updated by:
Alexander C
Updated by:
Hannah L
Updated by:
Matthew E
Updated by:
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Installed by:
Cole B
Test Fit:
Brent H
Test Fit:
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Test Fit:
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Test Fit:
David F

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