1986 240 DL
We have traced a battery discharge to fuse #8, which includes cab light, trunk light, additional lights and the central locks. Have checked lights and eliminated as source of the drain, leaving central lock as possible culprit. It seems to function alright, but how do we check to see if this is the cause of the drain?

We also show a drain on fuse #9, hazard light and gear shift indicator. We removed that fuse also and are trying to figure out that source. Our overdrive does not work and don't know if that is related. We have been disconnecting battery after use to avoid the drain, but would like to solve the problem. Any suggestions? Jim