Headlamp switch failure and dumb/elementary question!
 

Hey all!

I've got an '82 SC that should have stock wiring at the headlamp switch (no radio change, aftermarket accessories, etc), and I suspect still has original switch. I was driving to work at the hospital this morning (lights on), and got some whiffs of hot wires and then noticed that my instrument panel backlighting was out with all other lights working fine (I *think* they were on when I left the house, but it was early morning and since they're so dim I may not have noticed them being out from the get-go). Made it to work, and the headlamp switch is steadfastly stuck fully open. I imagine something internally broke and is caught in the plunging mechanism; the knob still turns freely. I just disconnected the battery so I could go to into work without worrying about self-immolation. I have the basic tools to label the wires and remove the light switch here before I go home, which I'd rather do than spend time in the hospital parking garage troubleshooting. Is there electrical risk in just removing the entire switch and driving home; like risk of cooking any wires or components? I understand that some of the wires are hot; I just don't know which and wondering if I wrapped all of the connectors with electrical tape would it be safe for a 5 mile drive back home. In my head I imagine it not being highly risky, but I'm an electrical novice and wanted to ask those more experienced.

Thanks! -Kyle

After my firsthand experience with an underdash short, I would suggest you flatbed the car home and thoroughly check everything, including replacing the headlight switch, in the comfort of your garage before reconnecting the battery.

I'd also suggest you install fuses in the dash light circuits, including those powering the ashtray and heater control lights and importantly the power to the front AC condenser blower fan. A quick search in this forum will uncover many "DIY" threads. It will also make you aware of how risky some of the wiring is in these cars if left as they came from the factory.

I'd also recommend you install relays on your headlight circuits too and enjoy the extra illumination. Again, there are many threads on this or just buy the JWest kit.

Thanks for the tips! Yeah after 3 years of ownership and 30k miles I'm still learning a lot every time we take it out. All the wiring seems original on further investigation, so this is a great opportunity to make some updates after getting lucky and avoiding any serious complications. Thanks again!

- Kyle