WOW is all I can really say!!! HOW wonderful to have so much information!

Thank you so much, I think I know have a understanding of this pump.

Now the vacuum lock pump is different in the electronics? The reason I ask is on "my car" the drivers side door unlock tries to work but just does not have enough strenth it seems to unlock, but locks fine. When its really hot outside about 90 plus or so it works okay. Is that also the locking pump motor or something else?

Can the strenth and durration be adjusted on the locking pump as well?

THanks again for the wonderful information, I printed that one web page up and put it in my files.