Is there any where on this site where I can find a wiring diagram for a 1978 F150.......or can someone point me in the direction of where I can find a diagram ??

I need to be able to follow the wire's from the back of the truck all the way up to the outside of the firewall where the 8 pin connector plugs in going into the inside of the cab.

 

I take it then you never really checked out those RED READ 1st threads? https://www.ford-trucks.com/forums/1...then-some.html

Hopefully these will help?

 

 

Yes I did check those sites that were posted on the wiring forum.......for some reason I did not find the diagram that I was needing.

Thanks for posting these diagrams they have the 8 pin connector I was looking for.

You guy's are the greatest for information !!!!

 

I just follow in 77&79F250's wake

 

We are riding this wave together brother. I always follow the marina rules and stay below the "No wake zone" speed. lol

Zip to 2:15

 

Thank you guy's for the diagrams they helped me with the 8 pin connector I was looking for, I have another problem.

I checked the continuity in all the wires from the back of the truck in the wiring harness for the tail, stop and turn signal's and found the problem with my turn signal's.

I also found that the brown wire in that harness was shorted to chassis and the ground on the chassis. I followed it back up to the connector and it has a separate two wire connector right next to the 8 pin connector. The wire was not unplugged from the connector outside the cab while it was showing grounded to the chassis.

I was not able to find this connector in the wiring diagram, and was wondering where it plugs up inside of the cab, this wire should be the running light wire.

 

look at Circuit 1104, Brown wire and Yellow/Black goes to fog lights and running lights? really not sure without seeing it

 

Thanks F 250 Super 4X4.......I will try and get a pic of the connector I should have said that it is green in color like the 8 pin in the same harness.

The other thing I didn't mention in my other post is that when I unplugged the connector and check continuity it was good on that wire.

I remover the harness from the truck so I could find the problem better.