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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
2000 Mitsubishi Eclipse
Tekonsha

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Part Number: 118311
In Stock
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$23.19
Retail:$45.43
You Save: 49%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2000 Mitsubishi Eclipse

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118311 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (83)
  • Q & A (0)
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Tekonsha Custom Fit Vehicle Wiring - 118311

  • 4 Flat
  • No Tow Package
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Plug-In
  • Tekonsha
  • Plug and Lead
  • No Converter
  • Visible

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection points along frame rail
    • Plug in T-connector
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

T-One Connection Location Points

This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located beneath your vehicle, along the driver's-side frame rail.


Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.



118311 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118311 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

83 reviews
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.

by:

Super easy to install and excelleny quality materials.



by:

It was great very easy to install no wires to cut. In less than 10 minutes it was hooked up and my son was off pulling his trailer with lights working.



by:
1976 Chevy C10

AWESOME!!! I went to Advance Auto, Autozone, Pep Boys, O'Reilly's and Napa looking for an adapter for my 1976 Chevy C10 Full Size Pickup and flatbed trailer and was out of luck. (In NY and TN.) Ended up with a ticket for no trailer lights. (Prior to learning about bicycle stickon battery operated lights.) Saw your awesome videos on You Tube, helpful pdf files, and product images which made me confident that this was the part I needed. THANK YOU SO MUCH FOR CARRYING THIS!!! Your website and links have been truly helpful in so many ways. This was a super easy hookup and anyone non-mechanical can do it. Came fast through UPS Standard, well-packaged, worked right away. I am super pleased. We got a lot of old pickups running around in Tennessee and I'll be sure to recommend this website to anyone in need!



by:
1979 Chevy C10

Ive installed the trailer harness for my 1979 Chevy truck.



by:
1975 Chevrolet C/K Series Pickup

I did receive these items yesterday and found them to be just what I needed and can work with for my 1975 Chevy Silverado c30 1t pickup. I needed not just one but two as this is my father's pickup and became my inheritance. On this pickup the whole wiring harness needed work and is now in the process of being completely replaced.
I needed two of these units due to the fact that it is hooked up to a 5th. wheel trailer so it is needing one to wire up the 5th wheel harness to the side of the bed and the other for the tow hitch assembly.
Yes I am a disabled veteran in lieu of my having back and head injuries while having served as a construction mechanic in the U.S. Navy Seabee's but I'm still a mechanic. I would like to thank you for having this product but however I just wished that there was one made for going from a 4 wire to a 7 wire T-connector but with the T-connector that allows for the adaption of allowing for the 7 wires to tow to come in from the bulkhead of the pickup and for the one outlet to allow for either one to have one set of wires for the 5th wheel hook-up or one to have one set of wires that allows for both that of the bumper along with those for the 5th wheel hook-up going to the interior side of the bed and with the third part of the T-Connector to allow for just the tail lights on these older trucks.



by:
1983 Chevrolet S-10 Blazer

this fit my 1983 S10 pickup and will fit 1982-84 S10. Big improvement in the truck wiring



by:

Fast shipping and good quality excellent service



by:
Chevrolet

I'm a big fan of etrailer because of their service, their inventory and their delivery. I have three trailers, which like cars need maintenance. When I need a light, a spring, a wiring harness, or something rare I dint even bother looking local anymore. Local never has what I want anyway. This order was for an odd part - a connector that will hook lights off of my 70 Chevy PU harness. Rare, nobody carries it.... a special order that came in a month early. Thx!



by:

Cable fit nicely and worked perfectly. It was a tight fit but that's good. The bumper is an area exposed to water and corrosive materials. I had it installed in about 2-3 minutes. Worked the first time.



by:

Super easy install, but the female end of your inline adapter didn't fit as well as the original factory. I didn't have a working turn signal on my pick up after the install. I wiggled the adapter and the turn signal started working. I pushed it in as hard as I could and taped it in place. All is well for now, but you may want to tweak the fit of your adapter. I also purchased a 4 pin to 7 pin adapter. It worked great.



by:

Had one for my 1978 pickup sold the truck and now own a 1976 pickup had to have another harness to put in. It is easy to do and takes all the headaches out of putting in a splice in harness. If I sell this truck and get another any year I will buy again from etrailer for a plug in and play harness. Thank You Frank!



by:

I was dreading having to splice into the taillight harness until the folks at eTrailer recommended this wiring harness. Took five minutes to install and works perfectly.



by:
1983 Chevrolet C/K Series Pickup

The wiring harness was exactly what I needed. The service from etrailer.com was fast and reliable. I would definitely recommend them to a friend.



by:
1981 GMC C/K Series Pickup

This product worked EXACTLY as it should. Easily plugged into connectors and worked perfectly. I used LARGE tie straps to hold all connections together just to be sure they don't pull apart, as my truck is used for off-roading as well.



by:

just as described could not be any easier plug and play. fast shipping and great price.



by:

About time this type of wiring harness has evolved, great product.



by:

Great product, lightening fast shipping, packaged good. Install was about 10 minutes, product works perfect, and about 1/3rd the cost of everywhere else. Thanks etrailer, will buy from again.



by:

Easy to deal with fast shipping and del ivery



by:
1984 Chevrolet C/K Series Pickup

Doesn't hold perfect in the 4 pin connector holder bracket but it's suitable



by:

The wire harness was super easy to install and works perfectly. The only thing you might mention in your instructions is the potential need to replace the original flasher module with a heavy duty one. The trailer signals were weak and blinked rapidly. it took me a bit to figure out the need for the new flasher but once I did everything works fine!



by:

the item arrived ahead of projected delivery date,,,, fits and works perfect on my 1976 c-10 short bed step-side truck, saves having to cut and splice in to the wiring system looking forward to getting more items ,,for this project,, thanks



by:

This product was exactly the right part. I could just plug and play. It made life easier then splicing it in. Service was fast I will buy more from etrailer.



by:
1984 Chevrolet C/K Series Pickup

Worked great. Has a rubber housing so it seals to the truck harness well. Would buy one again. Fast shipping too.



by:

It plug right into the truck wiring, didn't have any issues getting it installed. Good product with go price.



by:
1979 GMC C/K Series Pickup

Found the item that I needed very easily on the web site. It appears to be very well manufactured. It arrived 2 days earlier than expected. I would recommend etrailer.com for all your trailer needs.


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Show More Reviews

See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • Recommended Trailer Brake Controller for Use in 1984 Chevrolet K20 Pickup
    To install a trailer brake controller in your 1984 Chevrolet K20 Pickup you will need the brake controller itself, such as the excellent Tekonsha Primus IQ # TK90160 that you referenced, as well as a brake controller installation kit # ETBC7. If your truck does not already have a working 4-pole flat trailer connector you will also need one those, part # 118311. Your installation will be a hard-wire type since there is no quick-connect port under the dash. At right you will find links to...
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  • Wiring Parts for Adding 4-Way/7-Way Connectors on a 1983 GMC K10
    Hey Dennis, thanks for reaching out! Yes, the following parts will also fit your 1983 GMC K10: - T-One Wiring # 118311 - Universal Wiring Kit # ETBC7 - Prodigy P3 Controller # 90195 The ETBC7 wiring has a 4-Way and 7-Way combination so you can seamlessly tow a trailer with either style connector. I also recommend picking up the No-Drill Bracket # 18136 so you can secure the wiring next to your hitch receiver without drilling into anything.
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  • Trailer Hitch for a 1979 Chevy C-10 with Trailering Special Package
    Actually several of your pictures did make it through! What you have there is the standard/step bumper on your 1979 Chevy C-10. Deep drop bumpers, also called cowboy bumpers, drop way down. If your truck has an 8 foot bed you can use Curt trailer hitch # C14082. If you have a 6 foot bed you would need hitch # e88AR.. If you go with the Curt hitch then I also recommend etrailer ball mount kit # EBMK2416. It comes with a ball mount with a 3 inch rise/4 inch trop, a 2 inch ball, 2-5/16 inch...
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  • Recommended Brake Controller and Wiring Harness for a 1983 Chevrolet K10
    To control your trailer's brakes, with your 1983 Chevy K10, you are going to need a couple of wiring harnesses. The first one is the T-One Vehicle Wiring Harness item # 118311. This custom-fit T-One connector plugs into your Chevy's wiring harness, which is located beneath the rear bumper, along the driver's-side frame rail. This will provide you with a 4-flat connector. The second harness you will need is the Universal Installation Kit for Trailer Brake Controller item # ETBC7. The kit...
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  • Trailer Wiring and Brake Controller for a 1983 Chevy C10
    First, you will need a 4-way connection. The purpose of this connection is to operate your stop, turns, and tail lights of your trailer. The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118311 will quickly and easily allow an install of a 4-way trailer connector on your Chevrolet C/K Series Pickup with this custom wiring harness. T-One connector plugs directly into existing wiring no cutting, splicing or tapping required. In order to control your trailer with electric...
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  • How Does B&W Trailer Hitch Mount to a 1975 Chevy 1-Ton Dually Pickup Truck
    On B&W trailer hitch # BWHDRH25122 the mounting brackets are oriented the same for all applications. The tabs point in but attach to the bottoms of the frame rails. The customer submitting photo appears to have some other component installed. The upper brackets in that picture are not part of the hitch assembly. They appear to be bumper brackets. Once installed the receiver should be right under the bottom of the bumper of very close especially since you have a stock bumper on your 1975...
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  • Installing Brake Controller in 1982 Chevy K10 Blazer
    To install a brake controller on your 1982 Blazer, you will need our Brake Controller Installation Kit, part # ETBC7, which includes everything needed to install a brake controller if your Blazer has a functioning 4-pole trailer connector. If you do not already have a 4-pole trailer connector in place, one can easily be installed using a Tow Ready T- One Connector, part # 118311. I do not have any vehicle-specific installation instructions for your particular vehicle, but I have linked...
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  • Trailer Hitch Receiver, 7-Way Wiring and Brake Controller For a 1989 Chevrolet C10 Big Ten Truck
    The connector you have was used on older trucks so it may have had some wiring changed. The T-One Vehicle Wiring Harness # 118311 you can see matches your connector on your 1989 Chevrolet C10 Big Ten. This will give you a 4-way flat connector. We do have the 7-Way Kit # ETBC7 which will allow you to install a brake controller. I recommend installing the Redarc Tow-Pro Elite Brake Controller # RED44FR as it uses a small dash mounted control knob. This hides the large control box behind the...
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  • Recommended Brake Controller And 7-Way Wiring For 1984 And 1985 Chevy C10 Trucks
    For both your 1984 and 1985 Chevy C10 trucks, I recommend the Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional # 90195. If you will not be using the vehicles at the same time, you can use one controller and just add the second harness # 20127 and bracket # 2178. You can then use the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires # ETBC7 on each vehicle to get your 7-way connection and wiring. This kit will...
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  • 4-Way Trailer Wiring Harness Recommendation for 1984 Chevy C10
    For trailer wiring for your 1984 Chevy C10 for just the trailer lighting you'd want the part # 118311 which covers all of the trailer lighting functions.
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  • Trailer Hitch Receiver For a 1978 Chevy K10 Which Allows Spare Tire To Be Mounted Under Bed
    The Curt Trailer Hitch Receiver # C14082 will allow you to keep the spare tire located under the rear of your 1978 Chevrolet K10. This receiver is confirmed to fit either the 6' or 8' long bed with the factory step bumper. I have included an image below showing this receiver on a similar GMC with the spare tire still in place. The T-One Vehicle Wiring Harness # 118311 will give you a 4-way flat connector. This is most common connection on small utility trailer. For larger trailers you...
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  • Where is the Trailer Wiring Connection Point on a 1981 Chevy CK Series Pickup
    The vehicle tail light wiring harness is located along the inside of the left rear frame rail. The harness will have a connection point with connectors matching the ends of the T-connector, # 118311, that you referenced. I added a photo of this location on a newer model Chevy, the connector is different but the location is the same.
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  • Trailer Hitch and Wiring Harness Recommendation for 1978 Chevrolet K20 Pickup with Step Bumper
    For your 1978 Chevrolet K Series with step bumper, I recommend the B&W Heavy Duty Trailer Hitch Receiver # BWHDRH25198. This trailer hitch is designed to fit the 1978 C/K Series Pickup with an 8 foot bed with a deep drop bumper. This trailer hitch will meet the weight capacity needs you referenced, offering 1,600 pounds tongue weight and 16,000 pound towing capacities. This hitch has a powder coat finish to help resist rust and has safety chain loops built in. I have attached a photo...
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  • Parts Needed to Install a Trailer Brake Controller on a 1978 Chevy C/K Series Scottsdale
    First, you will need to install a 4-Way trailer connector, # 118311. I have included a link to the instructions for you. Next, you will need a 4 and 7 way installation kit, # ETBC7. This will provide the 7-Way and the wiring to install the brake controller. I have included some links that will help with the ETBC7 installation. You will also need a second cradle and mounting bracket for the second vehicle, # TK5906. And you will need another wiring harness for the second vehicle. Depending...
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  • Factory Connection Point for Trailer Wiring on a 1984 Chevy Blazer
    As far as I could find the connection point on the 1984 Chevy Blazer is located along the driver side frame rail near the back of the vehicle (see instructions link). You may be able to pull it down from in front of the gas tank or up and over the frame rail. Otherwise, the way that you have described it, sounds like you would have to lower the gas tank to reach the factory connection point.
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  • Parts Needed for Towing with a 1983 Chevrolet C20 Pickup
    The Curt Curt Trailer Hitch Receiver # C13099 that you referenced will fit your 1983 Chevrolet C20 if it has an 8 foot bed and came with a deep drop bumper. This trailer hitch is rated for 5,000 lbs Gross Towing Weight (GTW) and 500 lbs Tongue Weight (TW). When used with a Weight Distribution (WD) system those capacities are increased to 5,500 lbs GTW and 550 lbs TW. If you have an 8 foot bed with the standard or step bumper then you will want to go with the Curt # C14082 instead. This...
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  • Recommended Custom Fit Class V Trailer Hitch Receiver For 1984 GMC K3500 Pickup
    As long as your 1984 GMC K3500 Pickup has an 8' bed I recommend the B&W Heavy-Duty Trailer Hitch Receiver - Custom Fit - Class V # BWHDRH25198 if your truck has the Deepdrop bumper, or B&W Heavy-Duty Trailer Hitch Receiver - Custom Fit - Class V # BWHDRH25122 if your truck has the standard or step bumper. Both of these trailer hitch receiver's have a 1600lb maximum tongue weight rating, and 16000lb maximum trailer weight rating, but you will want to check the owner's manual of your K3500...
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  • Recommended Trailer Hitch For 1978 Chevrolet C10 Pickup Truck
    We do have trailer hitches that do not require drilling for installation, but they are only designed for a 1978 truck with a deep drop bumper. If you have a deep drop bumper I recommend part # C15511. This is a Class V hitch and it has a 2-inch receiver opening. If you have a standard bumper on your truck, the trailer hitch I recommend is part # C14082. Installation of this hitch does require three holes to be drilled into the frame for each side. If you plan on doing some towing you...
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  • Trailer Hitch Recommendation for a 1978 Chevy K20 * Foot Bed with Standard Bumper
    Draw-Tite trailer hitch # 41938 will fit your 1978 Chevy K20 if it has the standard factory bumper and it the distance from the end of the frame to the leaf spring shackle bracket is 19 inches or more so since yours are at 14 and 18-1/2 this hitch will not fit. You can instead use Ultra Frame Trailer Hitch Receiver - Custom Fit - Class V - 2" Item # 41947. I have linked the installation instructions for you. I also recommend etrailer.com Ball Mount Kit - 3" Rise or 4" Drop - 16,000 lbs...
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  • Trailer Hitch and Wiring for a 1977 Chevy Blazer 2-Wheel Drive
    Curt trailer hitch # C13401 will fit your 1977 Chevy Blazer. I also checked the installation instructions, linked for reference, and it does not exclude 2-wheel drive or 4-wheel drive models so you are good to go! If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage...
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  • Availability of Trailer Wiring that Fits 1975 Chevy C10
    Yes we do have a t-harness style of trailer wiring that fits your 1975 Chevy C10 with the Tekonsha kit part # 118311.
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  • Trailer Hitch Receiver Fit For 1978 Chevy K10 6 Foot Short Bed
    There is a trailer hitch receiver that fits your 1978 Chevy K10 with a 6 foot short bed and the standard step bumper, from Curt. The correct part number for the hitch that fits your truck is the following: - Curt Trailer Hitch Receiver # C14082 You can add a trailer wiring harness to your truck as well, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118311.
    view full answer...
  • Brake Controller Installation on 1979 GMC Jimmy
    A brake controller like the Tekonsha PowerTrac # 39523 you mentioned is not a vehicle specific item. A brake controller can be installed in just about any vehicle. You would need a brake controller installation kit, part # ETBC7 if you needed a 7-way trailer connector or # ETBC6 for a 6-way connector. The install kits include everything necessary to install a brake controller, including the 7 or 6-way trailer connector that is designed to adapt an existing 4-pole trailer connector. If...
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  • Trailer Hitch and Wiring for a 1977 Chevy C10 Pick-up with 6 Foot Step Side Bed
    We do have trailer hitches that will fit your 1977 Chevy C10 short bed but # C13099 is only for long bed models. For your truck you can use Curt trailer hitch # 13028 unless it has the 10 inch deep drop bumper. If it does have the deep drop bumper you can use # C15511. If you plan on doing some towing I recommend etrailer ball mount kit # EBMK4. It comes with a ball mount with a 2-3/4 inch rise or 4 inch drop, interchangeable ball set, hitch pin with clip, and a storage bag. If the ball...
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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Isabelle B
Updated by:
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Employee Cole B
Installed by:
Cole B

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