I am at a wits end and so are the mechanics. I bought this 94 Deville for $2500 in great condition. I have something draining the battery. I had reconditioned batteries replaced 3 times and they died after 4 to 7 days. I had a new battery that matches my caddy and it died 2 weeks later. The trunk motor is taken out and has to be closed manually. The alternator checks out fine. Please help me.