Why did my headlights kill my car?

I'm not smart enough to advise you as to why the headlights killed the car. My guess is a bad connection at the firewall connector or bad ground(s). That said, read on.

Post #17 eludes to what I'm fixin to say.


The stock headlight switch on older cars was never designed to properly carry the loads. They were designed as a cheap and quick to manufacture mass production switch. The factories should have been using relays in headlight circuits way back as early as the 40s.

That said, even when everything is in good condition, the wiring on these older Chrysler products needs some help. @crackedback's headlight harness kit adds substantial wiring and relays to take the load off the headlight switch and allows the relays to carry the load like they are designed to do. The mod also allows 100% alternator voltage at the headlights for brighter operation. No, the headlight system won't be stock anymore, but it will be much better for carrying the load and your headlights will be much brighter. I also strongly recommend upgrading to H4 halogen headlamp conversions at the same. You'll see a night and day difference. I cannot brag on Rob's kit enough. It has been the single most best bang for the buck I've done to my car. I also upgraded to Cibie H4 halogen headlamps at the same time.