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Old 08-05-2021, 09:46 AM   #1
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Ford-Lehman Wiring Harness

Can anybody provide the wiring harness schematic for a Ford-Lehman engine?
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Old 08-05-2021, 10:27 AM   #2
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Maybe this? (the red is my mod).

Courtesy of member jleonard who I think got it from American Diesel.

Hard to believe many will be still completely factory. It did get me going in the right direction though.
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Old 08-05-2021, 10:42 AM   #3
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Thanks, that helps.
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Old 08-05-2021, 12:37 PM   #4
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Interesting mod. Looks like a starter inhibit addition. One of my two motors has this mod. Prevents starter engagement if engine is already running.
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Old 08-05-2021, 01:00 PM   #5
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Originally Posted by diver dave View Post
Interesting mod. Looks like a starter inhibit addition. One of my two motors has this mod. Prevents starter engagement if engine is already running.
No, just a power post for all the connections....

Also one more to the house bank through an on/off switch.
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Old 08-05-2021, 01:04 PM   #6
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Ford-Lehman Wiring Harness

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No, just a power post for all the connections....



Also one more to the house bank through an on/off switch.

Ah OK. Here is my mod to keep an absent minded skipper, like me from grinding in the pinion gear. On the little Volvo diesels. I should add that this also assumes a diode based combiner is used, thereby the B+ term is at 0 V until alternator spins. This is how the circuit knows that the engine is rotating.

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