Where is the fuse for the fuel gauge located on a 91 Mazda Navajo.Also what would make the fuel gauge to quit working.?

Don't know about the fuse, but the most likely cause for your fuel gauge to quit working is a bad sender unit. You are going to have to drop the tank and replace the whole fuel pump assembly (you can't buy the sender by itself) Don't know about the fuse, but the most likely cause for your fuel gauge to quit working is a bad sender unit. You are going to have to drop the tank and replace the whole fuel pump assembly (you can't buy the sender by itself)