jimes

Hi newbie here so firstly hi to all.Just a mildly modded wrx 93 import and im having problems with alternator circuit.Charge light stays on with ignition off!The plug on alt with black and white stripe wire has 12v to it no ign then switch ignition on and has no voltage,charge light seems to come on and off when running and will go out above 4k rpm with lights on!Alternator is going back to be checked as its just been recon but even with alt removed black and white wire still has 12v with key out!HELP!....Can i rewire charge light circuit?