Should alternator have power with ignition off?
Should alternator have power with ignition off? This ignition wire is fused, this fuse can fail, check the wiring diagram for you vehicle, find this wire and check it to make sure it is not broken or the fuse is blown The ignition wire to the alternator should be hot with the key in the on position and off, no power, when the key is turned off. Which is the ignition input that turns on the alternator? • IG is the ignition input that turns on the alternator/regulator assembly. • S is used by the regulator to monitor charging voltage...