Fog Lights Enigmatic Deciphering the Electrical Puzzle

How to Test Fog Light Wires. Part of the series: How to Replace Fog Lights. Learn how to test your wires for fog lights with expert ... It should be to a switch. On the relay, is there a wire going to the battery? You'll need to look for a wiring diagram on the relay to find out ... all the F series trucks gonna be like this. 2 50 up. first thing we're going to do is remove the grill. I have a short video out on how to ... 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 ... Did you check all your wires again to make sure you have good connections and nothing shorting out ? Sounds like it's kicking a breaker or ... Bulb would be my guess or maybe the positive plug on the wire is dirty or corroded. Image. Re: Why does my fog light fuse keep falling out? The fuse box terminals don't have enough drag. Someone was ramming the fuse in and out and ... Another test is to measure the resistance between the chassis ground, and the grey wire with the fog lights OFF. That is after you read zero ... There's something wrong in the wiring/switch/bulb. I'd check behind the fog lights first, and look for obvious exposed/chaffed wiring. Quite possibly water or chaffed/broken wire causing it,but it's a slow tedious process of elimination. Checking the wiring paths, you can try pulling the fuse ...