I have a 98 STS with the Bose sound system in it I am having a battery draw problem I have a cycling draw that goes from 4amps down to 2.5 amps so I started pulling fuses and the draw dropped down to a normal level the draw is in the audio fuse. dose any one know what in the system might be causing this or how I can trouble shoot the system any help would be greatly helpful thanks
Automobile(s): 2002.5 F55 STS, 2014 Explorer XLT 4WD
MD Eastern Shore
Re: 98 STS battery drain
Your total car residual draw after RAP dropout should be <30 mA - less than 30 thousandths of an amp. 1 Amp is still far too high. Those stereo amps use a sensing voltage to "turn on". If something has been done to modify the signals from the control head (HU) then you're gonna need a good hotshot sound system install tech to trace out the system.
Beyond that, you're outta my antique car stereo memory ..........