Fog Lights Bewildered Electrical Diagnostics for the Perplexed

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 ... Something in addition to your foglight bulb filaments is closing (i.e. connecting) the circuit between battery positive and ground. If your ... Since you mentioned about a front end collision, it could be the front side markers or front parking lights. Either take the bulbs out and try ... look for any tape missing or frays...if you had a intermittin short...which may not be long enough to blow the fuse...say going over a speed ... The same fuse in the ER box that powers the "fog light on" indicator is the same for the fog lights. Thus, if you had a short, it would clear ... Start at the fog lights and inspect the wiring. It sounds like a chafed wire that is shorting out. Tundra234, May 21, 2020. All wires should be protected by fuses or circuit breaker to prevent wire fromcatching fire whould it short out. that is what fuses are for ... 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 ... Fog Lights (OEM FR-S) Broken - Help! EDIT: found the problem - it was the fuses. Apparently, the each fog light has their own fuse so they can go out ... The reason for mounting the fuse close to the battery is; if the unprotected wire (NO FUSE) between the battery and fuse is shorted to ground ...