2008 TAB WATER PUMP ELECTRICAL DIAGRAM

1Jack_Diane2

I traced all of the wires to help troubleshoot a water pump not working.  I hope the attached diagram helps others.  It all makes sense now that I’ve drawn it but having two white wires going to the pump was initially confusing.

My problem turned out to be the electrical switch at the faucet.  I think the high current from the pump arced enough to cause the switch to fail.  I’m going to add a relay at the faucet switch location to help prevent this in the future.

MuttonChops

@1Jack_Diane2;  Thanks always nice to have more user created documentation.
And . . . Welcome to the Forum.

Here is a basic DM Tab Electrical Overview Diagram I found some place / some time ago.

Might be of interest. (file attach)

rfuss928

Just FYI - The switch in the faucet is double redundant in the system and you can just not include it in the pump circuit.  The pump has a pressure switch and you have a wall switch.  Newer RV systems don't use switched faucets.