Ok gentlemen, I have searched this forum and others, but no luck. I have seen tons on the front break lever button breaking, but not the issue here. I have a 2006 FLHX, recently converted to brembo brakes (everything from the master cylinder to the rotors) The brakes light worked fine. Then I changed the throttle cables out (removed the roll off switch style cable, and went with a straight cable cause I do not have cruise) I have checked BOTH brake switches as well as the notorious front switch button, and everything is in place and adjusted properly. The front button switch is fully seating when the lever is released and it activated the relay when pulled. I reinstalled the rolloff switch thinking it might have completed the circuit, but still stays on. I have disconnected the rear switch and ohmed the switch, it activates the relay and seems to works fine. The brake light stays ON in the ignition mode BUT works as it should in access mode...??? Everything else on the bike works fine (turn signals, acc. lights, horn, ect) next suggestion....? Thanks Greg

 

Dont want to sound like a butt head, but did you inspect the bulb sockets? Ive seen where the contacts will touch each other where the brake light can stay on. Especially the 1157 type bulbs.

 

Ignition switch??

 

Check... Bulbs good ... Even swapped one out just in case ... Same issue :-/

 

Sound like you pinched the wire to the start run switch if it works normally in ACC. And only does it when in IGN. Try putting it in ACC and push the start button.

 

Nope nothing ... And I also completely disconnected the right side wiring harness and it still stays on

 

OK, dumb question, You know the front brake switch needs to be depressed to be off? when it's out it's on, it's a normally closed switch.
Never mind, you said you disconnected the harness. Might be a bad relay, the contacts could be fused together, unplug it.

 

I think there is a 4 pin accessory connector under the seat.It appears that you might have something incorrectly hooked up to it or it has a couple pins shorted together.This is according to my 09 manual.

 

Didn't unhook anything under the seat but just checked the acc plug and its capped ( dummy plug in it) so not touching or grounding out

 

Yep closed switch ... But with harness completely disconnected its still on... Relay is clicking when either brake switch is activated, so I think it's working correct