Problem with back feeding 5 volts..

[72MARIO]

I am having a problem with my ls swapped truck. I have not.changed any of the cab or chassis wiring since the sway. The problem is the center 4 diodes in My brake and running glow slightly with the ignition power on. It's not a big deal untill I hook onto my dump trailer and the brake controller sees 5 volts and apply the brakes...

So far I have added extra grounds changed the headlight and. Ignition switch. No chamge5 Then I unplugged the steering coloum taillight harness light switch ignition switch removed all fuses and flashers and still have 5 volts.

The only way I can stop the back feeding is when I remove
the ignition relays from my BP Automotive harness.

Am I making a bigger deal out of.this than it is because I have led tails ? As soon as I add a 194 bulb in line on the brake wire the diados go out