About to throw my stereo out into the gulf

Talk about a bad week for stereos....I had previously had a shop here add a JL amp, stealthboxed and a PPI phase adjuster to the car. I then added and Audio control EQL and JL components up front. Sounded good...no probs...then I got a Kenwood Head Unit with Sirius...had then add that...then the problems started. Engine whine.....floor noise....turn on/off thump. You name it. Took it back AGAIN and they added a relay to eliminate the thump and told me the floor noise was something Id have to live with and they couldnt isolate the engine whine.
Last night one of the channels started acting up so I opened the trunk to look and you would not believe the MESS of wires on the left side where my components were. I almost shat myself..plus a ground wire had come loose etc..when I tried to tidy them up.....(the car was running as I was tweaking my phase shifter for image) POP SPARK POP!! One of the remote turn on wires was NOT properly connected and fuses started blowing. I was soo pissed off I yanked everything out and decided t fix it MYSELF!!!!
So far I have eliminated the turn on off thump...buthave MORE engine noise...I am going to keep working on it - HOPEFULLY its not the RCA but a ground. My girlfriend is about to call the shop herself as she knows how pissed I was and AM. But I calmly decided that if I want it done right....do it myself.
So....now I tackled re-wiring...getting rid of the alt whine, then trying to get my FM to get a STATION! (The installer never hooked up the Ant power wire to my knowledge - it looked like he used my Kenwood ANT PWR wire to act as the remote turn on wire. I attached the remote turn on wire to the EXT PWR wire on my Kenwood..now to figure out how to power the BMW ant???
****ty week for my car stereo.