I have an 2001 S type that is draining the battery when sits for more than a day.
If I pull fuse # 20 in the passenger compartment fuse box the draw drops enough that the battery will stay up. Manual says it controls GEM module instrument and A/C. I needing to know if there is anything common that shorts on these. Or Does anybody have a wiring diagram of this circuit,

Thanks

 

It's part of the free download JTIS

 

+1 on download of JTIS.

The next thing to consider is the age and condition of the battery. Unless a voltmeter tells you otherwise concerning a draw with the ignition switch in the off position, a more likely cause is a failing or weak battery that does not hold a deep charge.

The charging system may also need to be checked to ensure the alternator is functioning correctly and that all connections are clean and tight.

 

Battery New Alternator is charging OK

 

Are you still experiencing the same condition when the vehicle is not driven for a few days?