Keep blowing "Room" fuse

The most frustrating way to find a short is to keep sticking in fuses and watching them blow, so I have a better method if you want to try it. Remove that blown fuse, then push in a pair of spade terminals instead. Use a pair of small jumper wires to connect each terminal to one terminal on a small 12 volt light bulb. For this procedure, a very common # 3157 brake light bulb works best. It has four exposed terminals that are easy to connect jumper wires to. Connect the wires to one terminal on each end of that plastic base.

When the short is present and you find the right pair of terminals on the bulb, it will light up full brightness and be hot, so be careful where you lay it or hang it. The bulb's resistance will limit current to a safe one amp, and its brightness will tell you when you do something that removes or changes the short. When you do, the bulb will get dim or go out.

If you have interior lights on the door panels, broken or frayed wires between the door hinges is the best suspect. You may see the test bulb get dim or flicker when you open or close one of the doors. Check for a glove box that is stuffed full of treasures that are pressing on the light socket.

Did you ever find what was causing your fuse to blow?

This post was from a few years ago so it is unlikely that they will respond but we are happy to assist you if you are having a similar issue. Let us know the details about what you are experiencing and we will help figure this out. Thanks