David is correct about fuse #12. Several years ago I developed a pre-wired switch specifically to address this problem, click on the following link for details: http://store.yahoo.com/dsvstore/batsav.html DMC Joe "We're here to help you" Seasons Greetings! DMC Help / De Lorean Services / <dmchelp@xxxx> Web Site: <www.deloreanservices.com> ----- Original Message ----- From: <jtrealty@xxxx> To: <dmcnews@xxxxxxxxxxx> Sent: Friday, December 01, 2000 12:25 AM Subject: [DML] Re: Door lock module contributing to battery drain Normal on a Delorean is usually quite a bit more. The cause > is the many diodes in circuit #12. It is true that a diode is like a > "check valve" but it is a leaky one. Each one adds up to a large > cumulative effect.They can also fail by getting more leaky not just > open or shorted. If you are confident that you have a good > battery(load test it) and that all of your electrical connections are > good then the problem most likely is in circuit #12. If the battery > is > more than 4-5 years old and it has spent it's life 1/2 in storage and > 1/2 being used it is probably not able to provide full capacity and a > load test will show it. Also if there is a problem in the charging > circuit and the battery is always undercharged it will shorten the > life of the battery. Another source of this problem are the door > switches. There is a rubber tip on them and with age or maybe it's no > longer there the switch can make contact even with the doors closed. > With the interior lights off you wouldn't see the door lights still > on. The ultimate solution is to install a master switch with a bypass > fused wire to the clock. Then at shows the doors can be left open and > you don't have to worry about the battery. It is also a good theft > deterrent if you get the one with a removable key.Most people > unfamiliar with a Delorean would never find the battery let alone the > master switch.If you have a measurable current in the door lock > circuit there is a problem, it should not have a measurable draw. > David Teitelbaum > vin 10757 and yes I have a master switch with clock bypass. > To properly check the source of the current drain put an ammeter on > the battery positive connection and observe the total current draw. > Now one at a time pull fuses. You will find that there is draw from > more than 1 fuse but the major amount will be drawn by #12 the door > and interior light circuit. Typically 10 m.a. is considered normal > for > a car sitting, it will take a month to discharge a good fully charged > battery. David Teitelbaum