Operation CHARM: Car repair manuals for everyone.

Testing For Short to Ground





1. Remove the blown fuse and disconnect the battery and load.
2. Connect one lead of a self powered test lamp or an ohmmeter to the fuse terminal on the load side.
3. Connect the other lead to a ground.
4. Beginning near the fuse block move the harness from side to side. Continue this point (about six inches apart) while watching the self powered test lamp or ohmmeter.
5. When the self powered test lamp glows, or ohmmeter registers, there is a short to a ground in the wiring near that point.