Hey guys...............can anyone help me figure out a problem with this vehicle??? I do not drive it daily. It will start everyday, if I think about starting it...............otherwise if it sits for a few.............I have to have a boost to turn it over. The battery is new. I thought the trunk light was stuck and draining the battery, so I removed the bulb, that was not it.... Is there anything else anyone can think of that could be causing this......HELP!!

Thanks
Scott
78 280SE/CE

connect a voltmeter across the battery posts. Should read 13 volts or higher after the 'boost'. But, this doesn't check alternator amperage capacity, only volts.

First check for disconnected wires. If you can't get 13+ volts at the battery posts, either bench test or replace alternator.

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1970 280S M130 engine- good runner
1971 250 M130 engine- #2 rod bearing, gone
1971 280SE (blown engine,parts car)
1977 German 280S W116-only 33 years old