I have an 04 Road King Custom. I now have Bad Dad LED tail lights which function as run/stop/turn. I have added a Bad Lands load equalizer and Harleys plug and play adapter to allow the 3 functions. I currently have absolutely no brake lights. The relay clicks only when I grab the front brake but still no lights. I have checked all the fuses, they are all good. I unplugged the rear brake switch and jumped it with no change. The running light and turn signal functions work just fine. I am running out of things to check other than each individual wire to see if there are any cuts of nicks in them. does anyone else have any ideas?

 

Did you check your accessorie fuse that is also used for this function

 

Yes, I checked all the fuses. I even pulled them all 1 by 1 then replaced them to see if another system was interfering. I've been stuck on this for 2 days, reading as much as I possibly could.

 

+1. From experience. On my bike the wiring schematic does not show the 3 black wires splitting to feed the turn signals and running lights. I found out the hard way that one of the black wires is not ground, but hot. Blew the accessories fuse. Replaced it with another 15A fuse and all is well.

 

I sent you a pm. I don't type to well. I will try to help you out over the ph. I sent you my number.
Wes

 

I just had a problem with my LED's where only one turn signal was not working correctly. Would work when standing still but did not work when running. Turned out I needed an isolated ground for my license plate light which was pulling resistance from the ground. That was enough to affect the turn signal LED. They are funny as there is so little current needed to run them. Any nick or cross wire will do it....
Oh, another thought. Some LED's are polarized. If you have a two wire for the brake light, switch the two leads on the lights and see if that helps.

 

Check your Cruise/Brake fuse again. If it's good pull the brake relay, turn ignition on and check Socket 4E for 12V that's the O/V wire from the Cruise/Brake fuse.
Either brake switch should give you 12V to socket 3E on the relay base, R/BE wire.
If everything looks good unhook connector 7b on top of fender under the seat and check the R/Y for 12V with brakes on, is that where the Bad Dad is connected?
The rear brake switch should have 12V on the O/W wire from the accessory fuse.
Good Luck
Bill

 

Thanks guys. My buddy is on his way over with his meter to help diagnose this issue. I will let you know what we find out.

 

This is the 1st thing to check. And btw all LEDs are current-directional, so if you plug in the bulb or hook it up backwards it isn't going to work.

 

If it's been days you just need to break out the multimeter and chase the wires.