Hello everyone, I am trying to clean up the wiring mess on my 1970 F100. I have a chance to purchase an original wiring harness that goes down the passenger side which includes the horn relay, alternator. The problem is that the harness is from a 1969, is there a difference? The person selling says some subtle differences are there, but when I look online at schematics I don't see it. Any help is always appreciated.

 

I am assuming you mean the harness that runs along the right fender apron. My Ford slide is pretty scratched up on that page. 69 and 70 are different part numbers. From there it looks like with or without factory A/C and with gauges or idiot lights makes a difference also.

BTW, Welcome to FTE!

 

Thanks for the reply. Yes, it is the harness that runs down the right side. I think I may just go the Painless or Kwik wire way.