Fiat 500 Headlight Fix – BCM Bypass with Relay & Rocker Switch (DIY Guide)
Автор: Driveway Fixes
Загружено: 2025-09-28
Просмотров: 404
In this video:
I show how I fixed a common Fiat 500 issue where the headlights stay on due to a faulty BCM (Body Control Module).
Instead of replacing the BCM, I built a bypass using add-a-fuse taps, a relay, and a DPST rocker switch, so the headlights only turn on with ignition and can be controlled manually.
What’s Covered:
Identifying the correct fuse slots (headlights + ignition-switched)
Wiring the relay coil (Pin 85/86) and contact side (Pin 30/87)
Connecting a DPST rocker switch for left & right beams
Step-by-step testing & troubleshooting
This is not a factory repair, but it’s a working workaround for anyone struggling with the same issue.
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