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This probably the easiest wiring job you will ever do..... The fuel shutoff solenoid has three wires, white, black, red. Black goes to ground, Red goes to a key-on power source, and White goes to the small terminal on the starter solenoid. Add a couple of battery cables, positive to the big terminal on the starter, negative to the block, and it will run. On the back of your alternator, there are two small posts with wires connected to them, and one large post. The large post goes straight to the positive battery post. One of the small posts gets grounded to the case of the alternator, and the other one gets connected to the "field" terminal of a external voltage regulator. I like to use old Ford regulators. They have four connectors in them labeled I A S F. The I is useless, and doesn't get connected to anything. A terminal gets connected to the positive post of the battery. S terminal gets connected to key on power. The F terminal gets connected to one of the small posts on the alternator. It doesn't matter which one gets grounded and which one gets field from the regulator, it will work either way.
Since the 67-72 Chevs are basically the same, I'm wondering if the front end will support the weight of a Cummins. I have a 67 C20 and know for a fact that the C10 has a lighter duty frame. I found that out when I had to notch my frame to install headers (my son had a 71 C10 at the time). I'm not sure the rear wishbone suspension would hold the torque either.
97 3500, 2 WD, G56, slightly bombed, A million+miles. Started the second million on 8/24/13
If you are lucky enough to be in Texas, you are lucky enough.
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