I can't... I have no other radio in my car and the sound from the carputer also feeds into the Empeg... I mean, I have XM also but the Empeg controls it all... I drive 80 miles roundtrip to work each day and can't really be without it... I'll live with the lower voltage until I get an idea as to what it might be. I have checked and retouched the solder on everytthing and nothign seems out of the ordinary...

Oh well... at least the I2C fan thing is working now...