WIRING--94 12 valve in a older 72 chevy truck - Dodge Cummins Diesel Forum
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post #1 of 3 (permalink) Old 06-26-2010, 09:12 PM Thread Starter
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WIRING--94 12 valve in a older 72 chevy truck

The 94 cummins is totaled, the motor and trans survived and I was wanting to transplant them into a old 1972 chevy truck. What is the best bet to hook up the wiring??

I saw on gears that Stacy David had PPE setup a duramax to run in an old international cabover, but whos the go-to for 2nd gen cummins??

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post #2 of 3 (permalink) Old 07-07-2010, 02:00 AM
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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.

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Last edited by 12VF250; 07-07-2010 at 02:10 AM. Reason: Left out information
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post #3 of 3 (permalink) Old 07-07-2010, 09:39 AM
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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.

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