Fog Light Electrical Nightmare Ursachen and Solutions

Something in addition to your foglight bulb filaments is closing (i.e. connecting) the circuit between battery positive and ground. If your ... One of the most common symptoms of faulty fog lights is when they simply won't turn on when activated. If your car does not have automatic fog ... Sounds like a short. DC voltage is supply/demand. If there is a short in the connector it will surge to either a fuse rating or your bulb. ... fog lamp circuit isn't broken and shorting out somewhere along the way. I chased an electrical gremlin like this for a year with my dome light ... After extensive testing of the bulb, wiring, switches etc. the end result of all of that is that the Body Control Module is not sending 12V out ... Start at the fog lights and inspect the wiring. It sounds like a chafed wire that is shorting out. Tundra234, May 21, 2020. I looked to see if maybe there was a fuse out, but I couldn't find a fog light specific fuse in the fusebox under the hood. I tried to see if ... You can rule out a bad light by plugging the driver side light into the passenger harness. If it blows its something else. Like. Reactions ... You might carefully inspect the wiring behind the lights themselves. There have been multiple reports of them rubbing and shorting out. If the above test shows that voltage is present at the plug, check the bulb filament by jumping bulb connections to battery voltage and a ground ...