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VST pump trouble

dave7489

New member
I have a 2006 mercury 25 hp 4 stroke. The high pressure VST pump has power going to its connectors. As soon as I plug the pump to them, they lose the power going to them. I have 2 pumps, both of them work when I test them on a battery. When I unplug the pump, the power returns to the connectors. I don't get it. People I talk to don't get it either. Please help.
 
The wires that are powering the pumps are loosing voltage under the load of the pump. You have a bad connection, bad relay or bad wire. You will need to load the circuit to test.
 
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