Mr. Dalton,

Thanks for your reply.

I had checked fuse 7 before - it is good.

This morning I applied an alternate 12 volt source to the pump - and the pump ran. Which leads me to believe the problem is not that the pump is defective, but instead that it is not be energized (turned on).

I was trying to find a schematic, but even though I own 3 MB repair manuals, I can't find a schematic for this. I would assume there is a relay for the power to the pump.

Can you tell me if there is one?

Thanks!

Jim

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Syntax26

1995 MB E420 (lowered)
1989 MB 300SE (sold to brother)
1975 MB 280 (sold)
One damn fine jacked-up golf cart