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Hi, My name is Jay
Are you getting 12 volts on the dark blue wire at connector of the crankshaft sensor?
If you disconnect the large connector at the main computer and see if you still get 12 volts at cranks sensor connector to see if there is a short in the harness or if now have 0 volts at connector then it is a short internally in computer. This wire should have 0 volts at all times since sensor is a voltage generator and needs no reference voltage at connector.
I just thought about you have changed engine harness. Are you sure the harness is exact match for your harness that came off? The pins in computer may change from year to year. The two crank sensor wires should be pins 21 for grey and 22 for blue wires on the computer connector.
Here is wire diagram so you can match up harness to correct pins on computer to make sure you have correct harness.
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Yes. With key on.
What is the other color wire in the connector to the crank sensor?
The crankshaft sensor has 5 wires in it?
I found the correct wiring for the truck. Forget about the one i sent you. It is for a 1995. After checking the diagram i find you have the 1994 harness. Here is correct wire diagram.
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