2000 Jeep Grand Cherokee electrical Problems

[ComputerWizKid]

I posted in this Thread and I bought the car and now I am having problems with the electrical system something is draining the battery and I don't know what (The dealer I bought it from found a Remote starter that was partially installed and finished removing it for me, However the car was sold AS-IS so they will not help me anymore they said you are on your own now)

If the car is sitting for more then two days it goes completely dead and not even the door locks or any lights work so I have to use a jump starter to get it to start but it will continue to work fine for the rest of the day but as I said if I let it sit for more then two days when I go to start it the car is completely dead

Anyway does anyone have an idea of what to look for? I had a mechanic friend look at it and he pulled all of the fuses out and it was still measuring a draw on the battery so I am thinking something must be hooked up before the fuse boxes or directly to the battery (With a fuse I hope)

The Jeep is a Limited and is fairy equipped with options
Infinity Gold Audio System and the Auto Temperature Climate Control System and the driver information Center all of that stuff works as expected but there is something still draining the battery

Thanks and sorry for the long post I did not want to exclude any information

 

[Bubbaleone]

If the previous owner ("partially") installed a remote starter switch, that should be a real red flag for you! What else, half-ass, did he work on?

Tracing a short can get real tedious so get a good volt/ohmeter, a troublelight, and start looking for the obvious first.

Did the factory wiring harness or connectors get altered when the remote start switch was installed?

Did the dealer actually repair any changes to the harness, back to factory configuration when they uninstalled it? It only take one grounded hot wire to kill a battery.

If it was me I'd check everything to do with that remote switch install first. Then, starting from the battery back, visually inspecting and continuity testing the harness and connectors under the hood.

Get a good flashlight or a troublelight and visually inspect everything you can get to under the dash. Be real wary about any wiring that's dangling or looks out of place. If it looks wrong it probably is.

 

[Raizinman]

If you pulled all the fuses and you still have a drain, then it does sort of limit the possibilities. My guess having worked for a Jeep Dealer, would be either in the starting or charging circuit. Try electrically disconnecting the alternator and then checking again for a drain. Often the diodes, (which normally flow one way only) can leak and cause a drain in the alternator. If this isn’t it, then disconnect the starter. You could have a short in the starter. It appears you are closing down on it. If you have a remote starter, if you haven’t make sure you disconnect the inline fuse to that too!

If it is draining the battery that fast, that short must be turning the drain into heat. If you have an noncontact infrared temperature gun ($49) you can point and shoot looking for any abnormal temperatures. Sure you can go around and just touch things, but it is more fun with the gun.

 

[LTC8K6]

Wjjeeps.com has lots of info on those.

Have you had the battery and charging system checked out?