My car is a '99 GTP 4 door, and it has been giving me some problems with electrical stuff. Sometimes after locking it, the car will unlock all 4 doors by itself after a few seconds. Also the car stopped responding to the key fob. I tried both remotes so it isn't a dead battery in the key fob. additionally the rear speakers and sub have been cutting out more and more frequently.
The car has a few electrically related mods... HIDs, LED tails, zzp alternator re-wire, zzp fuel pump re-wire, intense pcm, aftermarket head unit, 2 amps and 1 sub (Previous owner built the audio set up). I don't know where to begin, mostly because electrical work is something I am very unfamiliar with. I'm thinking I need better grounding or maybe a higher output alternator, but those are totally uninformed guesses really. Any input would be greatly appreciated.
