I am putting a 6.9L in my 79 F250. I have everything set in place and now it is time to do some wiring. Can someone tell me what each of the 8 pins are in the plug so I know what wires I need and dont need to hook up to. Thanks in advance.

 

Wait what year is the 6.9?
Wiring changed from 86 to 87.

 

I was told it was from an 86 E350 van. The guy did not sound to sure on the year though but was definitely from a van. Any help on any year would be appreciated. I just plan on cutting the wires off at the harness and using individual couplings for what I need.

 

Two big orange/white wires go to the glow plugs and back to the glow plug relay mounted on the passenger side inner fender. Use AWG 10 wire for this and run seperate wires for each to the glow plug relay.

Red/green goes to the fuel shut off solenoid, it needs power to start and run, so it would go to the coil wire + that comes from the ignition switch on a gas truck.
This wire also powers the fast idle solenoid and cold timing advance solenoid on the IP.

White/red goes to the oil pressure guage.
Red/white goes to the temp guage.
Red/black goes to the overheat light.

That is what you would find on a F series, not sure if the E series is a bit different.