Feul system wiring Diagram needed
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Laughing Gas
Joined: Apr 2001
Posts: 868
Likes: 3
From: New Glasgow, Nova Scotia
Feul system wiring Diagram needed
Hey guys, I have a 77 F150 that has some wiring issues in the fuel guage system. It has dual tanks and only reads the Aux tank. Everything going to the senders is working as it the sender for the rear tank. The second tank was put on at a dealer when the truck was new and I am not sure it they took a short cut or 2 but a wiring diagram of the system would certainly help . My 77 Shop manuals don't cover it at all. Thanks 
Laughing Gas
Joined: Jun 2016
Posts: 855
Likes: 56
From: Des Moines, Washington
Check out Fordification
They don't have one for '77 but after the change that added the solenoid valve, there're essentially the same from year to year.
Michael
They don't have one for '77 but after the change that added the solenoid valve, there're essentially the same from year to year.
Michael
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Laughing Gas
Joined: Apr 2001
Posts: 868
Likes: 3
From: New Glasgow, Nova Scotia
Don't have any for that generation truck, 73-79. I have the full set of Ford manuals and they are useless for this. Just need to see what wire does what on the back of the switch. There are 2 green wires for the senders, 1 black I think goes to the guage and 2 orange, one power for the Solenoid and one for the senders . I just want to make sure who is who before I dig a little further. Thanks
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