Troubleshooting the ZCI Circuit Protected Vehicle Wiring Harness 119250KIT
Published 01/12/2025
Question:
I installed the trailer wiring in a 2016 Porsche macan when the running lights are on solo they work fine if you hit the brakes or turn signals it trips the breaker and shuts everything off if the running lights are off the right turn works left turn works and brake lights work. Anything you can suggest will be greatly appreciated
asked by: Douglas L
Expert Reply:
Yes, check the grounds on the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector item # 119250KIT and on your trailer's 4-way too. All those weird little glitches sound like a loose ground. You'll want to make sure the white wire is firmly attached to a spot with bare metal. If there's paint or corrosion built up scrap it off.
