How big of a fuse do I need for a headlight?
How big of a fuse do I need for a headlight? Your average high beam (for a normal headlight) is 55 or 65 watts. In a 12 V circuit, that's less than 6 amps nominally. If you put in a 10 amp fuse, you should be ok. I have looked at some amperage vs wire diameter charts and 20 amps seems a bit too close to the 24 amp maximum for my comfort levels. How can a blown fuse affect a headlight? Turn on your DMM and touch the meter probes on each side of the bulb contacts. If there's...