Thanks, Tony.
1 AUX Voltage: The CD player was actually less than 0.5V (it only had fixed line-outs), but he put a couple line-amps on (I traded in some high-low adapters) and its fine now.
2 Dimmer Line: Me stupid. RTFM!
3 Common Ground/Noise: No, I won't be using the CD player very often (its better than having a hole in my dash, marginally) but I'm going back in a week to try out a ground-loop isolator.
4 (new): I *did* discover a bug though...I think...
- - - - - - - - - - - - - - - - - --
MK2 #141, green, 12GB
_________________________
- - -
MK2 #141 12GB Queue #5723 (SOLD)
MK2a 30GB + grn + tuner + blk empeg case