I posted about this in Alarm/Stereo earlier because I thought it might be one of my amps doing this(still could be), but Im also thinkn now it might be my alt..

My question is, if I still have the whining in my speakers after I turn the car off and just put it on acc., is is still possible it could be my alt. going bad? When the car is running, the car is only reading like 13.8-.9 volts. I was just going to get another alt. tonite and swap it out, but I dont wanna waste my time if you guys dont think its that and I just have bummed amp.

Thanx

Are you sure it's just not a bad ground?

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Current Mods:
AEM V2 intake, MP 60mm TB, Accel 24lb injectors, Crane #12 cams,Ross forged 10:1 pistons, Eagle H-beam rods, ARP head and main studs,
Ported and polished head, Crane valve springs, PT rockers and lifters, MSD coil, Accel wires, AFX underdrive pulley,
DC sports ceramic coated header, Ebay testpipe, Apex-i N1 catback, 255 lph fuel pump, Apex-i SAFC, Spec Stage III clutch, Phantom Grip,
full Energy Suspension polyurethane bushing kit, Tokico springs and blue shocks, Russell steel braided clutch and brake lines,
17" Koning Imagines, NOS 100 hp direct port N20 kit

Man, I tried like 5 different grounding points and no luck. I even tried grounding it at the battery.