1980 Z28: Im having a challenge getting my washer pump to work. I picked up a new replacement pump and still the same problem. The washer pump doesn't start with the button push. Does the engine need to be running for the pump to work?

I tested the dark blue wire and it's getting 12v when the button is pushed...no voltage when it's not pushed. I cleaned/sanded the connections and reconnected. Still no pump.

Im happy that at least the button works and the wipers do work. On the new pump there are two wires that I don't see on any diagrams, but the install instructions say to wire nut them together. They were connected underneath of the pump cover and are Pink and Red.

The wire colors dont match the diagram, but on the two prong connector there is a dark blue wire (activates by pushing wiper button) and a black with brown stripe next to the blue. The other three prong connector has a black wire, black with yellow stripe, light blue and another black with yellow stripe. The two black/yellow wires go to the same connection point.

Also, on the new pump it has a new three prong connector that it says to connect to where the old three prong connector was. Then it says to connect the old three prong connector to a new spot on the new pump. I did that and the wipers didn't even work and no power was coming from the button push. The trouble shooting instructions say that if wipers are not working to connect the old three prong connector directly to the old connection point. I did that and the wipers now work and I'm getting 12v from a button push. Trouble shooting doesn't say what to do next and this leaves the new three prong connector hanging loose.

New pump/old pump pictures attached.

If that has any semblance of sense, any ideas on what to do/test next? Thanks guys.

 

Hello. i have the same problem with mine z28 1980 , how did you fix it