The car is a 1969 Riviera - 430. What would cause the accessory terminal to stop working? All the other fuses seem to be working fine, but putting a test light on the Accessory terminal and nothing. Car starts, runs, seat works but windows do not - (they were plugged into that terminal.) I think I did short something out behind the radio as I'm adding gauges and ta constant yellow wire behind the dash did spark once, so that may be the culprit? Would it be a fusible link towards the starter? Where do I start to check? Thanks . BH
Key on. But now that you said that - I wouldn't put it past me to test it in the off position. It should still have power when running correct? BH
Fusable links typically (for that vintage in the GM world) were two, one for the engine harness, and one for the lighting harness. The links protected the wiring that fed the fuse block power buses. If it were a link, it would affect more than just the accessory fuse terminal. If you have your manual, look at the wiring detail for the starter switch. The key in ACC, ON and Start/Run determines what is powered. It takes a few minutes of studying it to see exactly what is powered and what is no in the three powered positions. Sometimes corrosion will cause the terminal to become an open to that side of the fuse. One side of the fuse terminal is powered, the other terminal is to the accessory/switch etc.. The power (always present) to accessories flows to ground to complete the circuit when a switch is actuated.
