positive post usually, although neg should work - just complete the battery circuit [positive terminal to the disconnected cable] with the meter so you can see if there's a draw on the battery with everything turned off

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics