I'm having a couple different issues and I'm wondering if they're related. First issue is with door locks. The rear two doors sometimes dont lock when pressing the clicker button on my key. Sometimes as we're driving at slow speeds, the door locks will just go off quite a few times but will quit when speeding up. Second issue is the overhead light. We replaced the bulb and it worked for a short time(week maybe), but then died again. Didn't leave the lights on or anything like that. Third issue is the worst because of the summertime. On longer trips, the AC has started to cut out. Not that the fan wont keep blowing, but where the AC normally has a nice full sound, when it cuts out its like a shhhhhhhhhhhhhh sound. If we turn the AC off for a time, it'll start working again for a bit, but then cut out. I had had an issue similar to that one on an old car of mine(2002 Kia Sportage) and I think I remember it being the blower motor switch, but because of the other electrical issues, I wasnt sure. Any suggestions? Thank you for any help!

 

The compressor will cycle on and off and may shut down for a bit. It also could shut it down do to low pressure, high pressure and various other things. Get it to do it while its at idle and see if the compressor clutch is disengaging.

As for the lock and dome light sounds like a short somewhere.

 

Search my posting and you will find my post about the air gap between the clutch plate and pulley. This could be your problem and the fix is basically FREE if you are a DIYer.