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Old 06-27-2017, 08:03 AM   #1
72MARIO
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Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
Problem with back feeding 5 volts..

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
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
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