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1970 Bronco Turned over once now NO POWER to anything

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
49,325
I see a couple of things worth commenting on.

Looks like you have a “one wire“ 3G Alternator. This is a self-exciting model that does not need the green with red stripe exciter wire.
Even though it has been working for you without trouble, I would pay very close attention to your black charge wire and it’s condition overtime.
It’s short enough that it can probably handle high current. But I would still replace it with a larger gauge cable. At least eight gauge, if not six.
It really should be protected as well. They are from the factory, and I see no reason to change that. FORD uses a fusible link, as most manufacturers seem to. But a midi fuse or maxi fuse in about 150 amp rating would be better.

Sorry, already forgot what the other thing was!

But do the other things suggested. Check out those firewall connectors and fix the wires at the back of the ignition switch.
I would still remove and clean the wires on the battery side of the starter relay and verify that the black wire is still functioning.
 
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