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Old October 31st, 2016, 07:41 PM
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Join Date: Mar 2015
Location: Cave Junction, Oregon
Truck: 1964 GMC 1500 LWB Wideside 305E V6.
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Default Re: GMC 1962 starter solenoid wiring

Run the engine, check voltage. Then turn on Lights, Heater, and anything else that draws power. If the voltage has dropped but is remaining steady the alternator is maintaining, but if the voltage is steadily dropping and not Stopping the alternator is either not working or not wired correctly. It's a common thing for voltage regulators to go bad causing an appearance that the alternator is bad, but as old as it is...new ones are cheap and cheap insurance. You can get a new regulator to, I would recommend converting to a 1 wire though. One wire from alternator to battery positive and then hook up the gauge and your good to go.
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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