84 f250 351w I have checked the diagrams but still cannot find this wiring setup. My concern is the wirenut. Coming from the hot side of starter solenoid is a blue wire (I will just use main colors) that enters a fusible link with a yellow wire that comes from the regulator and a red wire that goes to cab wiring loom, on other end of fusible link is black wire going to a wirenut with 3 other wires, red wire coming from alternator and a big yellow wire and a small yellow wire both going to cab wiring loom. Wirenut is not factory so what should it look like? Should all these wires be held with a wirenut?

 

No wirenuts, Romex, extension cords, residential light switches, etc, were ever used as OEM equipment.

 

I'll say AMEN to Tedster9's comment. And if you find that kind of stuff you know things are very questionable.

You said you've "checked the diagrams", but just in case you haven't see these:

• 1981 EVTM: Charge & Power Distribution - Gary's Garagemahal
• 1986 EVTM: Charge & Power Distribution - Gasoline Engines - Gary's Garagemahal

I've given you two links because the '86 version shows the integrated regulator that was used in the 2G alternator, while the '81 version has the external regulator for the 1G alternator. I don't know which you have, so you get both links.

 

Thanks, mine is external regulator with ammeter. Wire colors do not match in link photos, but I think wiring is correct as far as I can tell, where are the other wires on the starter relay (the S terminal)? I still do not know what should happen to the wires held by the wirenut.

 

We are in the dark as you've not posted pictures. No clue what the wires are the wire nut is on, etc. But, we will leave it to you.

 

I'm real sorry but I have no way to take any pictures. I described wires the best I could as to there main color and where they went to or came from, I knew there would be a hard time for you guys without pictures but I thought that if I described it good enough I had a chance somebody might know what I was talking about. Thanks for trying to help.

 

peka, open this link and there is a photo of the starter solenoid/relay. See if the photo can be used to help. https://www.ford-trucks.com/forums/1...ible-line.html

 

Diagram is from Hayes, that's where I first got confused, but in the picture I can see the differences, the fusible links on the orange wires and on the yellow wire. I do not have this, my wires (3 of them) all go into one fusible link. I have one wire that connects to the relay and goes about 6" to this fusible link where it is joined with the yellow wire from the regulator and a red wire from the harness, out the other end of the link is one wire that connects via wirenut to big wire (red) from alternator along with two yellow wires from harness. The link looks to be stock as the wires going into harness have not been molested. Maybe the correct way to find out about the wirenut is to go backwards and ask where does the big wire from the alternator go if it is not directly connected to the relay?

 

THAT is a problem....

 

I do not know if THAT is a problem, it is the way Ford sent it. I have described it the best I can, so I guess I will live with the wirenut. Thanks to everyone for all your time and effort to help me.

 

I have a Haynes manual and none of the 84,85 and 86 diagrams match the wiring in my 86 F350, looks like bits of all of them. The harness looks original. I have it totally opened up for a rewire.
There are junctions in there that make no sense and they are original.
Will have a good look at Gary's diagram and see what matches.
Cheers Steve

 

That's the problem with Haynes, Chilton, or anything that isn't year-specific. There were changes from year to year, but a generic manual doesn't capture them. For instance, the 2G alternator with the internal regulator.