Audio Systems: Chrysler LHS 93 CD deck installation problems, factory speakers, watt amp

Question
Well, I had someone put in a cd deck along with 2 12" speakers and a 1000 watt amp. Well the problem is that it messed up my car some how with the alarm not working any more along with the power when the car isn't on the door locks, lights, car alarm that should work when the car is off along with the deck not keeping the time and channels so the memory isn't working either. Also, LOL.. the in dash speakers and back factory speakers won't work and cant seem to find out why, I had to hook up my door speakers and my 12"s stright to the deck to be able to have sound at all. So the in dash speakers and back seat speakers don't work either.
I believe I have also a bad ground not sure though when the car is running and you open the door and the inside lights turn on and you close the door the 12"s start having a large buzz sound how could I fix a bad gound? The car has a factory amp that I didn't really know about and the person that put my music in cut those wires well they cut about all my wires but I had put those back the way they were my self and tried to put back the factory deck but that didn't want to work at all so I put everything back and still can't get the stuff working in full. The sad thing is that all this happend 2 days after I bought my car everything worked great before that. Could you tell me what I could do to get things working right?

Answer
From the sounds of things, you should consider yourself lucky that you still HAVE a car to work with. It could be MUCH worse after 2 days.. as in burned to ashes.

Start by taking it to a professional installer. Tell them what you have and what you expect, they will tell you what can be done (hopefully with you both meeting in the middle on some common ground).

The best I can hope from this is that you learned your lesson on using 'imitation' installers. :(
At this point, you can't possibly expect someone to deal with this 'basket case' online though the WWW (if you still do... please realise that this is not a tangible effort).
Find a local pro that you can trust and go from there.

best of luck.

Sincerely,
Jerry Mael