Cadillac Repair: battery draining, fuse radio, amp fuse

Question
I pulled fuses to see what may be causing my battery to drain, found it to be a 50 amp fuse "body 3" - Controlled power relay.controlled power back-up relay. mirror fuse, platform zone module (pZM) fuse, Radio/phone fuse, cluster fuse, amp fuse, comfort fuse.
Is there a way from here to narrow it further to resolve the battery draining without taking it to a dealer?

Answer
If you are mechanicaly inclined or know of someone who is, You will need a DIGITAL VOLT/OHM METER, Simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information necessary to fix your vehicle.