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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => LT/LS Swaps => Topic started by: youngboyinthe74 on November 13, 2014, 07:40:42 PM
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Hey guys, im doing a 5.3 swap on my 74 c10 and i have a couple questions about wiring the motor up.
1. From the factory harness, what are the main wires needed?
2. Which color wire is for the fuel gauge and do i just run that to the sending unit even tho it has power coming from relay?
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Factory Truck harness or the 5.3 harness?
the fuel gauge uses a pink wire. it will be in the same harness as the power wire.
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On the factory 74 truck harness.
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You need the starter, power distribution, Alternator, AC and gauge senor wiring from the factory setup.
What are you going to do for the speedometer?
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Autometer gauges. Thx for that info btw