Windshield Washer Help
 

Installed a new original reproduction washer pump from Classic Parts. I tested it before I put the dash back together and the washer squirts fluid on the windshield continuously. It only stops when I shut the wipers off completely. Is the on off switch itself bad? OR is it the new pump? I disconnected the power to the pump itself and it continued to pump washer fluid. The pump also seems to be leaking where the piston enters the pump chamber. Did I just get a bad unit?
1972 c10

Re: Windshield Washer Help
 

If it is leaking, that is not good. The switch itself only provides the ground circuit for the pump and washer. There are two sets of plugs on the washer/wiper unit as you found. If your switch is loose on the dash it can make things quirky. What I do and some others have done and is an easy modification is to install a S10 blazer washer reservoir in the old bottle location and call it a day. I make a harness to connect into the old washer plug so it uses the switch like the factory style. I also make new washer lines to delete them from inside the cab. If something goes wrong, quick trip to the parts store and put in another pump. Easy peasy...

Here is my thread from 2016:
https://67-72chevytrucks.com/vboard/...d.php?t=714339


Smitty