Alternator wiring

[OldRedFord]

How many wires go to the alternator on a 1972 F100? I only have two that I see.

[fordman]

with or without full gauges?

[OldRedFord]

With full gauges. One of the wires has a rubber boot on it. The boot is orange I think. The other wire just has a round terminal on it to slip over a post.

The wires are laying on the crankshaft pully in the pic.

[fordman]

it should have a total of 4 wires. orange is the main power wire. to the large stud. black/red would go from the alt to the regulator bolt as for a ground. i have posted pictures of how the wires should go. the colors may vary but they are hooked up correctly. http://www.fordification.com/tech/wirin ... _quick.jpg




and here is another one i took a picture of.



the black one in all of my picturs of the alternators are ground to the regulator bolt. black /red on the diagram. yellow is orange on the diagram i dont know what the other colors match on my pictures. you just have to follow the diagram for your truck i guess.

[OldRedFord]

Thanks Fordman for the pics. That helps a lot. Looks like I am just missing the wire between the Alt and the voltage regulator.

[OldRedFord]

Where does the black wire on yours go on the voltage regulator?


The alternator wires are a black/red wire and a orange wire.

[BobbyFord]

Here's the wiring on my '72 gauge type alt:

[fordman]

my black one goes to the botl on the core support that holds the regulator on to the core support. it is a ground wire. just as in bobby's pics. the Black wire with red stripe is the ground wire. it runs from the alternator ground stud to the core support.

[OldRedFord]

Here's the wiring on my '72 gauge type alt:

[ Image ]

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[ Image ]

Thanks a lot for that. Exactly what I need to do. Now I see I have the black plastic splice thing on the wrong terminal.