fuse keeps blowing

30 amp fuse under the hood keeps blowing out. They checking the harnesses for the lights, it s the one that controls running lights, power locks, and dash lights. It s under the hood , and still hard for me to see lol.... Gotta be a bad wire somewhere but a real bitch to find.... I think they ve changed the fog light harnesses , one was burnt a little. I used to take out fuses at the track so I started running with no lights on there and never had a problem.... But it s back now under civilized street driving .....

Could be a bad relay too.

It's very rare but sometimes it is the actual light bulb or LED -

I would look at anything aftermarket thats been tapped into the circuit first including even an aftermarket stereo.