Re: 1964 GMC Model 1002 build journal
Steve, If you're using the VDO PM351 fan motor, the orange wire is positive and gives the motor a clockwise rotation looking at the shaft end. I've used these motors a couple of times with good results. Not made in the USA, but cheap if you shop around. As for the heater core, I personally would pay more for copper.
Keep up the good work!
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