Electrical pros....within... Tail light wiring
I am installing an LED brake light. I'm going to use the stock circuit board to distribute all the wiring. The new tail light (Rick Doss p/n 2010-0730 ) has 3 wires and came with no instructions:
1 Red going inside the lamp housing
1 Black going inside the lamp housing
1 Black that looks like it attaches to the brass outside housing.
The stock wiring has 3 wires also:
1 Blue - Tailight
1 Red/Yellow - Brake light
1 Black - GND
How do I splice the new tail light into the original wiring for proper function?
Thanks in advance for any help!
P/N 2010-0730 shown here:
http://www.powersportjunkie.com/RICK...0.htm?CartID=1
I paid $90.00 for it...not $124.

I touched the gnd lead to batt neg and the other black wire to batt pos...tail light lit up. Then touched the red wire to batt pos and the it got brighter.
So.....if anyone else ever runs into this:
Stock red/Yellow wire to LED light red wire
Stock blue wire to LED light black wire
Stock black wire to LED light housing black wire (This is GND).
I'm going to have the plate bracket powder coated black and then I'm going to silicone or epoxy the OEM distribution circuit board to the back of it...that way everything plugs in nice and clean. I've already test fit everything and it looks awesome. No more "zit" tail light sticking out of the fender with tons of dead space on each side. This tail light mostly fills up the opening from edge to edge and does not protrude out past the bobtail.
I'll take pics and post when all done.
Thanks for the tips gents!
Last edited by FLYING_BURRITO_BROTHER; Sep 6, 2012 at 12:42 PM.
The only issue I have now is the black wire that runs into the LED board is loose. If you move the wire the light cuts out. I'm not sure how to fix it but I'm going to have to tear it open when I have time.
On a good note though this light looks killer in the rear fender! Oh and I decided not to use the circuit board that harley had installed. I cut it out and just wired everything direct.
Here are some pics of mine.
https://www.hdforums.com/forum/softa...s-mudflap.html
...and more of the bike.
https://www.hdforums.com/forum/softa...completed.html
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I'm going to remove mine tonight and disassemble the housing and see if I can fix the wire that keeps cutting in and out.
I thought about keeping the factory harness and circuit board but in the end I figured it would be easier to just wire directly. I might consider using it though sometime in the future.
Last edited by WhiteNoise; Nov 12, 2012 at 03:07 PM.
The Best of Harley-Davidson for Lifelong Riders
I'm going to remove mine tonight and disassemble the housing and see if I can fix the wire that keeps cutting in and out.
I thought about keeping the factory harness and circuit board but in the end I figured it would be easier to just wire directly. I might consider using it though sometime in the future.
I do have an idea for a "splash" guard to keep water from hitting the wiring. Though I don't really ride in the rain.
Considering that I'm going to remove the tail light I might put the board back in...it would make removing the light fixture easier in the future.









