battery draw

My 1991 mercury grand marquis drains battery during cold or hot temperatures, but sooner when cold related, about a 12hr period and some times takes a week. Has new alt, numerous batteries, and alt disconnected and still battery goes dead. Something is turning on and is a slight draw, but what. Need help.:banghead:

My 1991 mercury grand marquis drains battery during cold or hot temperatures, but sooner when cold related, about a 12hr period and some times takes a week. Has new alt, numerous batteries, and alt disconnected and still battery goes dead. Something is turning on and is a slight draw, but what. Need help.:banghead:

Check on some of the stupid things that maybe staying on such as, map and dome light, light under the hood and trunk and glovebox, visor light, pushed in cigarette lighter.

Check on some of the stupid things that maybe staying on such as, map and dome light, light under the hood and trunk and glovebox, visor light, pushed in cigarette lighter. GREAT tips, and appreciated, but have checked all these in detail, and still pulling my hair out. Need more advise.

GREAT tips, and appreciated, but have checked all these in detail, and still pulling my hair out. Need more advise.

You do a draw test by using a test light....remove the negative battery cable, put the test light on the battery negative post and the other end on the negative cable end you just removed, the light should light, then start pulling fuses and when the light go's out see what is on that fuse circuit, replace fuse, and then start unplugging those things on the circuit and when the light go's out, you have the problem...hope this helps.