Rick's Free Auto Repair Advice

Posts Tagged: alternator is good

GM alternator wiring

GM alternator wiring GM has many different alternators and each has its own alternator wiring diagram and alternator symptoms. One of the key differences is how the internal voltage regulator determines charge rate. Does it check the vehicle’s voltage internally or from an outside source? The PDF shown here is for a GM CS 130 and CS 144 alternator. Both of these alternators (generators) can be wired differently depending on their application. They can have a BAT wire and two additional wires, or a BAT and a single “L” wire. … Read More


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