Contour Enthusiasts Group Archives Forums Modifications Audio New Stereo Noise

I got into my car yesterday and noticed a new whine. Not alternator noise/ ground loop (already fixed that problem), but a whine influenced by the heater/AC function. It only makes the sound if the air in on the highest, and second highest setting. The only thing I've changed about my system lately is adding a second sub and amp. I have two 1 farad caps, and tomorrow my HU will be sending a 5 volt signal to my amps (2.2 V currently). So, any suggestions? The sound is a high pitched buzzing sound, almost like a dustbuster. It gets higher in pitch when I turn the air to highest setting. It comes from all speakers, except subs, Wierd... Thanks in advance for any help you can give...

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Nick,
'99 Contour LX(Zetec) ATX
Performance: KKM Intake, rez removed,
2 1/4 inch straight pipe muffler, Focussport wires, more to come
Audio: 1700 watts of Kicker subs, amps, speakers; Panasonic H.U.; Wiring by Phoenix Gold; Security By DEI Python 1000 ESP