I have a 86 22r carb pickup. I have replaced the missing fuses, links.In the relay and fuse box there is no connection for the 80amp relay(not sure if carb truck were equipped with it). when I turn the key i get no response. So i ran a wire to the starter solenoid and with a switch attempted to turn on the truck. the motor turn over and tryed turning on(this truck has ran in over ten years). I got spark. But what would cause no response from key and what would keep it from turning on.

Also there is a plug that is underneath the seat on the passenger side that was cut. what does it power or go to?

 

On mine, there is like 3 or 4 wires coming off of the batt + terminal including the starter cable. (stock).

If any of those comes loose or breaks, its lights out. Compleatly dead. It happened to me twice now.

Look there.

 

Thats the connector to the rest of the harness which leads to the back used for brake lights/taillights/signals/license plate light

 

I get a response when the key is turned(the battery icon lights up on the dash). Do all of the trucks have a 80 amp fuse link?