What would cause my brake light and gauge lights fuse to blow? I put the car in reverse and it blew! As you can see in my picture, I upgraded to the blade style fuse box. The fuse missing is the 20 amp that keeps blowing. The car is a ‘73 240z.

I had an alternator that popped mine. It was a reman from a chain store. The smart electrical guys on here said it was "back charging". Took it back, they tested it and it showed BAD. Gave me another one and so far so good.

Edited 4 hours ago4 hr by siteunseen