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Wiring The LED Lights From A Nighthawk Tow Bar To The RM-1676-7R Replacement Power Cord  

Updated 10/14/2026 | Published 10/12/2026

Question:

I ordered etrailer replacement power cord for my nighthawk tow bar. I noticed that your cord has only two wires for the led lights , I have four wires for the led lights. Will it still work or do I have to return it and order the Roadmaster power cord ?

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Expert Reply:

Hi 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 and 2 wires coming out the other side of the butt connectors going to the LED lights. I made a crude diagram showing what I mean by that. I'm no artist, so don't judge it too hard, but it should make clear what I am trying to say.

What vehicle are you using your towbar with?

expert reply by:
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Lazer S
Wiring Diagram For Connecting LEDs
Wiring Diagram For Connecting LEDs
(click to enlarge)
Rick L. profile picture

Rick L.

10/13/2026

Thanks for the reply. So the led lights have a one each white, green, brown, and yellow wire.

Lazer S. profile picture
Etrailer Expert

Lazer S.

10/13/2026

@RickL Don't know why the picture didn't attach (sorry about that), but it actually wouldn't have helped in your case with what you just mentioned. Did you add these LED lights onto your tow bar or where they the lights that came on it? Everything I can find only shows there being 2 wires that need to be connected for this to get installed.
Lazer S. profile picture
Etrailer Expert

Lazer S.

10/14/2026

@RickL I found some information that cleared things up. The # RM-1676-7R turns out to be for the older Nighthawk tow bar and you have the newer style one which needs the # RM36NQ (Nighthawk Tow Bars w/ Red & Amber LEDs). This has the 4 wires to attach the LEDs and is what you need. That said, we didn't have that listed or explained very well so I'm going to have that reshipped out to you and the incorrect one returned to us with a pre=paid return label. Sorry for the confusion and inconvenience this caused.

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