Battery drain

It sounds like you do have a parasitic draw on your system. There is a test that anyone can do for an electrical short. All you need is a multi-meter ($15.00 to $20.00 or so at AutoZone). Disconnect one of the battery cables from the battery. Take your multi-meter, turn it on, and set to 20V DC. Take one lead and connect it to the newly disconnected battery cable, and connect the other lead to the battery post. You may have to MacGyver it to keep the leads connected. You should see some sort of reading. Now start unplugging fuses, one at a time, until you see a significant drop in the meters reading. You have now identified the circuit. If the car has any aftermarket electronics (like a radio, for example), then start with checking that.

We also have a general guide, which has different methods, here: https://www.2carpros.com/articles/car-battery-dead-overnight

This is the multimeter that I have: http://www.sears.com/craftsman-multimeter-digital-with-8-functions-and-20/p-03482141000P?plpSellerId=Sears&prdNo=1&blockNo=1&blockType=G1

Let us know which fuse it was and I will personally look up what is on that circuit and we will figure out how to fix it.

The manufacture had a bulletin out for a possible condition to a draw. Here is the information:

Date: September 17, 2004.

Order No: P-B-54.21/113

Supersedes:

Group: 54

SUBJECT:
Model 211.026/065/070/076/082/083/265/282/283, up to VIN A530021 or X148458

Model Year 2003 and 2004

Vehicle Can No Longer Be Started / Battery Discharged

If you receive customer reports in the above model vehicles of the vehicle no longer able to be started or the battery being discharged, the Lower Control Panel (LCP) may need to be replaced if the battery has already passed the Midtronics test outlined in S-B-58.00/124a. Follow the procedure below to test and repair.

Note : The vehicle battery may discharge because of high quiescent current drawn from the Lower Control Panel (LCP). A momentary under voltage of approximately 5 Volts results when the pushbutton unit illumination and function lights in the LCP are switched on simultaneously, thus preventing the LCP from switching off completely.

1. Perform quiescent current test as per WIS document AR54.10-P-1030T.

2. If the quiescent current is found to be higher then the stated normal value, by 1.5 to 2.5 A, remove fuse 39 (F34f39) in the Interior Fuse box (F34). Fuse 39 supplies power for the LCP (N72).

3. If the quiescent current value reduces by 1.5 - 2.5 A after step 2 indicated above, then the LCP should be replaced. Remove/install/replace center switch block for LCP as per WIS document AR54.21-P-1263T.

Note : It is not necessary to disconnect the ground line from the battery for this step!

4. If the quiescent current value does not reduce by 1.5 - 2.5 A after step 2 indicated above, then the LCP should not be replaced. Further diagnosis of quiescent current consumption needs to be performed. Follow P-B-54.10190 - BATTERY DIAGNOSTIC TROUBLESHOOTING PROCEDURE for additional guidance.

5. Perform STAR DIAGNOSIS short test and erase fault codes.

Note : Use center switch block for lower control panel control module with new part number according to parts ordering notes. Until publication of the new part number, a note is stored in EPC. The new part will therefore be automatically delivered.