Line noise and elimination thereof
So - in my ongoing panic to have iPod integration in a car that isn't designed for it, I bought the Harmon/Kardon drive+play 1 and had it installed in my car.
It looks pretty cool, mounted on my Kuda USA pad, just above my Treo - and the rotary remote mirrors the operation of the iPod. Not the same as true iPod integration into the head unit, but ..
We tried connecting the H/K device through the inline, wired FM modulator. LOTS of line noise. Sucks. Then, we tried hard wiring it in through the XM Module, as described on another thread here - that was worse. When the H/K device was powered up, you couldn't even listen to the XM at all - when the H/K device was turned off, the XM sounded normal.
The H/K device draws its power off of the front console cigar lighter, so it'* always powered up.
So, it'* the cassette adapter or garbage sound. Bleh.
Today'* question for the more electronically creative than I - where else could I tap into power? Is there another ground I could use? Is there a filter that would help? Am I tilting at windmills? HELP!