Having a good installer is crucial.. About two months ago, in an effort to get rid of my alternator whine, I had my installer put in 4 guage wiring to everything.. Although the alternator whine was gone, the empeg's grounding problem was shown (tick tick tick tick when it was playing..) the installer had aparrantly tested the system w/ my cd-player... anyways when I saw it, the first thing I noticed was that the ground wire going to/from amp/empeg was cut, so I told the installer that this is what was causing it and asked him to provide the necessary tools for repair.. After hooking up the wire, the problem still persisted (getting the installer to just "grin" at my failed attempt...)

Anyways when I brought it home and took it apart, they had cut the ground wire on both sides, amp and empeg, so hooking it up on the amp side obviously didn't do any good...
-mark

...proud to have one of the first Mark I units