When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a fully loaded 93 f150 it started smoking under the dash now the runing lights stay on and cluster lights if I turn the key on cluster lights go out but running lights stay on I see melted wires under steering column the harnes that goes to rear speakers power seat etc??
I had to purchase a new wiring block for the same application. Mine melted down. That's was 7 years ago, and I tried through the parts counter to get the part, but the young kid couldn't find it. Luckily there was an older ford guy in the back that knew what I was talking about. 50$ and I was soldering and wiring, back on the road again.
They sell the headlight switch plug at most napa or auto part brand stores. Or go directly to the dealership. New plug, wires and switch you should be alright.
I didn't check the parts store, but went directly to the dealership. Napa may very well be a better option as they seem to have parts for vintage vehicles that other part stores don't seem to store or have access too.
$9.99 at autozone, my local has it in stock.
You can but the relay upgrade harness from LMC for close to what you can buy the parts to make your own. This article shows how to do your own and does a pretty good job of explaining why it should be done.