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Replacement Coiled 7-Way Cable for Roadmaster Nighthawk Tow Bar  

Updated 10/07/2025 | Published 10/19/2021

Question:

I have a Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K Item # RM-676 Tow Bar and I need to replace the Electrical cord 7-way RV-style plug on 1 end and 6-way plug on other end. the Red cord Can you please give the correct part number? Thank you,

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Expert Reply:

The correct replacement coiled lighting wire for the Roadmaster Nighthawk part # RM-676 is the part # RM-1676-7R.

expert reply by:
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Jameson C
Marc C. profile picture

Marc C.

10/5/2025

Jameson, This replacement cord doesn’t show the LED connectors that are shown in the installation instructions from Roadmaster. How does this cord make the LEDs in the tow bar word? In the instructions point 3 mentions cutting the LED connection and point 6 describes the reconnect. Your product doesn’t show the LED connectors nor does it have the heat shrink butt connectors. Are you sure this is the right one? Marc Instructions 1. Remove the screw, split washer and clamp (Figure 1). 2. Remove the 6-wire plug from the end of the cord. 3. Pull the cord until the shrink wrap around the LED wiring (Figure 2) is exposed, and cut the LED wiring. 4. Remove the original power cord. 5. Insert the replacement power cord into the same channel as the original, and in the same orientation. 6. Using the supplied heat-shrink butt connectors, attach the new LED wiring to the LED wiring you cut in step 3. Attach red to red and black to black (Figure 3). 7. Seal the butt connectors with a heat gun to make a waterproof connection. 8. Rotate the power cord until the red and black LED wiring is in the recessed LED channel (Figure 1). Secure the power cord to the Nighthawk using the clamp, split washer and screw you removed in step 1.

Jameson C. profile picture
Etrailer Expert

Jameson C.

10/6/2025

@MarcC I am looking at our online instructions for the Nighthawk and they do not have any of that info mentioned and seemingly are totally different from what you have. I attached a link to them to this message. How old is your tow bar?
Marc profile picture

Marc

10/6/2025

@JamesonCyou do have the right one: https://www.etrailer.com/qs/485020F1 You’ll see the LED connector inwas talking about.
Jameson C. profile picture
Etrailer Expert

Jameson C.

10/7/2025

@Marc I am a little embarrassed but also impressed you were able to find that. I looked and looked and I swear I didn't see that. It is our part number # RM-1676-7R that you need. I apologize for all of the confusion and not getting you what you need.

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