Thread: CS121 harness
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Old 02-20-2015, 04:47 PM   #4
starterman99
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Location: santa maria,ca.
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Re: CS121 harness

you wont burn up the alternator if the red wire from the S terminal on regulator is not hooked up. GM produced thousands of trucks using only the light terminal in the regulator to activate the alternator and provide for indicator light function.
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