I am in the process of wiring up my taillights on my undertail. I am aware that on the F4i the green wires are the grounds... On the turn signals no problems with only 2 wires. However on the LED brake lights I have a black, red, and brown, and then the 3 wires on the Honda harness. ANyone know for sure which I wire the brown and red to on the F4i Harness?

 

I dont know of the top of my head but turn your bike on and test them with a test light to see which is brake and which is running

 

Your red wire on the signalwill go to the solid color wire on the bike w/o the white stripe, the brown on the turn signalwill go to the wire with the white stripe and the black wire on the turn signal goesto the brown on the bike.

 

What year model is your bike? I just did mine, its an 2001, I'll walk out there and look, but it sounds like they are all different,, I remember 2 sets of 3 wires coming out of the harness, the green was ground. one of the was running lights and one was brake lights, two left extra for blinkers,,,****.... let me go look

 

yellow to red,, brown to white,, thats how mine was,,, i had four wires on the undertail to hook up. 1 for the blinker, one for the ground and the other two are connect as above.. hope that helps man,,,, I will say this,, when I say yellow to red I mean the line, not the solid color of the wire

 

He has a red brown and black on his turns. I need to revise what I typed in my post. THE BLACK ON THE TURN NEEDS TO GO TO THE GREEN WIRE ON THE BIKE NOT THE BROWN (BECAUSE THERE ISN'T ONE) SORRY.

 

all gravy i searched and found my volt/amp meter. Wired her all up correctly. Beautiful and oh so damn bright! Just waiting on my vertical swingarm plate mount to get here and I am all done with preseason upgrades. Thanks for everyones input

 

How did you find this? I'm stuck putting mine on- different make of undertail...HELP!