turn lights on truck causes brakes on fifth wheel trailer to pulse on and off

2006 CHEVROLET SILVERADO
101,000 MILES • 6.0L • V8 • 4WD • AUTOMATIC
Avatar
CAROL MAJSZAK
  • MEMBER
  • 1 POST
When turning lights on truck causes brakes on fifth wheel trailer to pulse on and off. Have rewired impulse with new brake wire directly to trailer plug. Any suggestions?
Jun 15, 2017 at 3:57 PM
Advertisement
Avatar
STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
Check both the trailer and the truck for a bad ground to the lights. Sounds like you have one that is corroded and feeding power back to the brakes.
Jun 15, 2017 at 10:25 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.