I have two 91 Accords. The batteries are going dead in both of them while they are not running. The batteries tested good and the alternators seem to be working okay. I replaced the battery cables already. ????

 

you could use a test light and put it between the battery cable and the battery post, it should just barely glow from the backup fuse circuit. If it lights up strong you can start pulling fuses until it goes out or goes dim. That will help to narrow down where the draw is coming from.

 

yes, and better if you have a digital ammeter to read the milleamp draw in off position. do this as a first step before pulling fuses to save time.
have read that 100 milleamps is excessive.
only time i have measured a car my draw was far less.

 

http://www.hondaaccordforum.co...m.htm

Hope this helps