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Replacement 7-Way to 6-Way Coiled-to-Straight Cord for Roadmaster Nighthawk Tow Bar - 8' Long
(37 reviews)
Price: $123.66
In Stock
Roadmaster
Replacement 7-Way to 6-Way Coiled-to-Straight Cord for Roadmaster Nighthawk Tow Bar - 8' Long
Part Number: RM-1676-7R
In Stock
$123.66
Retail:$177.18
You Save: $53.52
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- All Info
- Reviews (37)
- Q & A (0)
- Photos
Roadmaster Accessories and Parts - RM-1676-7R
- Tow Bar
- Power Cords
- Roadmaster
Replace the power cord from your Roadmaster Nighthawk tow bar so that you can run power from your RV to your towed vehicle. Coiled end prevents dragging and straight end runs through tow bar channel guides. Wires into tow bar to power LED lights.
Features:
- Adapter cord runs power from your RV to your towed vehicle or trailer
- 7-Way plug connects to RV and uninstalled 6-way plug connects to the towed vehicle
- Coiled end avoids dragging and tangling
- Straight end installs into channel guides on the tow bar arms
- 2 Wires connect directly to tow bar to power LED lights
- Silicone-injected plugs prevent corrosion and vinyl coating resists water, oil, and chemicals
- Made in the USA
Specs:
- Extended length: 8'
- Wire gauge: 16
Fits:
- Roadmaster Nighthawk tow bar with LED lights with serial numbers up to 18406
1676-7R Replacement Road Master Night Hawk Towbar with Running Lights 7 Wire RV to 6 Wire Round Coiled-to-Straight Curly Power Cord for Channel Guides - 8' Long
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Arrived Damaged
- Wrong item was ordered
- Package not accepted
Ratings & Reviews
4.8
37 reviews
by:
Jeff
02/21/2026
My original tow bar dragged on a parking lot when we pulled out on a trip and damaged the wiring. I was able to temporarily repair it until we got home. I ordered this replacement which was easy to install and has bent working great ever since. Thanks for etrailer for helping me get this replaced quickly!
by:
Dean
08/11/2026
Shipped right away and arrived in new condition. Thank you, etrailer
by:
Richard
10/16/2026
etrailer has some of the best customer service, they don’t blow you off. Customer service is rare nowadays. A big shut out to Lazer S. I had purchased a new power cord for my Roadmaster and the part turned out to be wrong. Lazer S realize it and shipped out the right one right away. Everybody at etrailer should be proud of themselves. I’ve been a customer for several years.
by:
Scott
04/07/2026
Quick shipping and just as advertised. Not the cheapest but certainly high quality and designed to fit my Nighthawk exactly as it was built.
by:
Phillip
10/29/2026
Hook it up the other day, everything was perfect!
by:
Lyn
01/24/2026
Video on installation was superb. I chose to solder & heatshrink the LED wires istead of using the butt splices. Good fit in the towbar channel.
by:
Mark
08/19/2026
Extremely fast delivery.
by:
Paul
08/13/2026
Perfect fit...
by:
Lawrence
12/22/2025
Replaced original cord. Was a perfect fit. Arrived on time. Will continue to purchase from etraler. Great customer service.
by:
Koz
04/05/2025
Need to include extra butt ends connectors in the package, destroyed both of them trying to install the 1st time & had to make a run to Lowes. The video on how to install it was a great help; but VERY misleading...the video made it look easy, it wasn't! But got it done.
by:
James
04/22/2026
Great price, fast delivery!
by:
Charles
10/25/2023
Jaime, you did one hell of a job helping me with my Roadmaster tow bar wiring issue. I did receive the power cable today. Expedited shipping was a great help. It was packaged nicely and I have already installed the cable. You people at Etrailer.com are fantastic. Keep up the good work.
Charles M.
10/26/2024
Replacement part was perfect and working just fine. Excellent customer service dept.
by:
Gannon
08/03/2022
Great product, easy to switch with original damaged part, worked great first time. Came with easy to understand instructions just like everything I have purchased through etrailer.
Gannon
8/4/2023
Still working great!
by:
Paul
10/06/2025
Product worked as listed
Simple install
Simple install
by:
Josh
11/06/2024
I had to redo the connections for the nighthawk running lights, does not have enough internal space for factory splice or the field connection.
by:
William
08/30/2019
6way plug small end screw so tight could not get it out. Roadmaster cord work great order a new plug 6 wire
by:
Kevin
11/22/2024
Comes with very detailed instructions! Great!
E-trailer is a wonderful supplier!!!
E-trailer is a wonderful supplier!!!
by:
Dennis
02/10/2024
Exactly as ordered. Quick shipping
by:
jtortho
11/11/2023
Worked well. Good instructions.
by:
Lyle
05/06/2025
Just what I needed and came a day early great job thank you.
by:
Darryl
01/30/2025
Quick service
by:
Tim
02/09/2024
Well made product.
by:
H
06/03/2026
by:
Steve
12/15/2022
Arrived with in just a day or two.
by:
Steve
04/16/2023
Katrina B.
4/17/2023
I see that you gave your experience with etrailer 1 star. If you give me more information about why you are disappointed in us, I will be happy to assist you.
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See what our Experts say about this Roadmaster Accessories and Parts
- Troubleshooting Electrical Issue With Roadmaster Nighthawk Tow Bar RM-676Hi Jim, good question, and you’re on the right track with your thinking. Electrical issues like that aren’t at all common with the Roadmaster Nighthawk # RM-676, but what you’re describing does line up with a backfeed or short, not a failure of the tow bar itself. When the motorhome’s running lights are on, a small amount of voltage bleeding into the turn/brake circuits usually points to a wiring issue, most often in the coiled umbilical cable or one of the plug ends. I’d start by checking...
view full answer... - Replacement Coiled 7-Way Cable for Roadmaster Nighthawk Tow BarThe correct replacement coiled lighting wire for the Roadmaster Nighthawk part # RM-676 is the part # RM-1676-7R.
view full answer... - Replacement Replacement 7-Way to 6-Way Coiled-to-Straight Cord For Roadmaster Nighthawk Hey, Bob! Yes, we do have one! The replacement cable is part # RM-1676-7R. It has the 2 wires that connect directly to tow bar to power LED lights on the sides of the Roadmaster Nighthawk All-Terrain. How long have you been using the Nighthawk?
view full answer... - Troubleshooting Non-Working Lights On A Roadmaster Nighthawk Tow Bar Hi Debbie, The lights are being powered by the motorhome's 7-way so if the lights aren't going out there's got to be some sort of issue with the motorhome's 7-way. When they flickered did they just shut off after or were they still working? The lights should be getting power from your trailer running light fuse so I would definitely check if that's blown. You could also just have a loose/corroded ground connection or damage to your 7-way wiring on the motorhome so I would trace through...
view full answer... - Flat Tow Setup for 2025 Entegra Coach Vision XL 36C Towing 2024 Jeep GladiatorHey Alan! It looks like you already ordered the Roadmaster Direct-Connect Base Plate Kit # RM-521453-5, which is compatible with the factory plastic and steel bumper. This will work with your existing Roadmaster Nighthawk # RM-676. The wiring kit # RM-15267 you ordered will handle the Gladiator's lights as long as you don't have a model with ParkSense. However, that 7-way to 6-way cable lacks the wiring to illuminate the LED lights on the Nighthawk. If you have the original Flexo-Coil...
view full answer... - Availability of Female 6-Way Tester for Roadmaster WiringHey Phil! This is a pretty uncommon testing situation, and the demand just isn't there to make a female 6-way tester for flat tow wiring. To check the wiring running through the Nighthawk # RM-676, your best option is to plug the 7-way into the motorhome and use a circuit tester on the pins at the 6-way end while you run through the different light functions. If you find the cord itself is the problem, the Replacement Power Cord # RM-1676-7R is designed for the older Nighthawk with amber...
view full answer... - Wiring The LED Lights From A Nighthawk Tow Bar To The RM-1676-7R Replacement Power CordHi Rick! I'm surprised the wires for your LEDs are not tied together. That is why the Replacement 7-Way to 6-Way Coiled-to-Straight Cord for Roadmaster Nighthawk Tow Bar - 8' Long # RM-1676-7R only has 2 wires. But fear not. The lights on your tow bars should have the same color wires and you will just need to tie them together before hooking them to the replacement cord (red to red and black to black). You will have one wire going into one side of each butt connector from the new cord...
view full answer... - Replacement 7-Way to 6-Way for Roadmaster Nighthawk Tow BarHey Gerald! If you don't care about the LED lights working on your Roadmaster Nighthawk # RM-676 then yes, you can use the # RM-1676-7 as a replacement. However, for just a little more you can get the Replacement 7-Way to 6-Way Coiled-to-Straight Cord for Roadmaster Nighthawk Tow Bar # RM-1676-7R which has the LED connection on it. What happened to your original cable?
view full answer... - How Much Can You Cut Off of the LED Wires for the Roadmaster 7-wire to 6-wire Replacement CordThere is not necessarily a pre set number of how much wire you should cut off when using the Replacement 7-Wire to 6-Wire Coiled-to-Straight Cord for Roadmaster Nighthawk Tow Bar # RM-1676-7R. You can cut the wire as short as needed so long as you leave enough wire on each end to fully seat in the butt connectors for a good strong attachment (you will want to give a pull at each side after crimping to ensure they are in the connector tightly). I went out to our warehouse to take a look...
view full answer... - Replacement Replacement 7-Way to 6-Way Coiled-to-Straight Cord For Roadmaster NighthawkHey, Bob! We sure do have one! The replacement cable is part # RM-1676-7R. It has the 2 wires that connect directly to tow bar to power LED lights on the sides. How long have you been using the Nighthawk?
view full answer...
Do you have a question about this Accessories and Part?
Info for this part was:
Edited by:
Lindsey S
Video Edited:
Jacob T
Installed by:
Cole B
Installed by:
Shane H
Updated by:
Wilson B
Updated by:
Amanda K
Written by:
Mike S
Video by:
Michael B
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Brooke M.
4/7/2025
I hear you on the butt connectors! That would be nice if they came with a few back ups. In addition to having a few spares on hand, would you have any other pieces of advice that would have made this install easier for anyone else out there in the reviews section doing research?