Wiper Switch Problem

[jz7p6t]

Has anyone encountered a problem with the Wiper System/Switch where after installing a new switch, the wipers would not turn off and the delay function was not working properly. We've run into a problem with 2 new switches that do not match the switch schematics in the Vette wiring diagrams from 86-90. And when installed on an 88 Vette, did not work correctly.
In the Low position from pins B to F, the switch should measure 24k ohms, the 2 switches we have measure open circuit. In the Off position it should measure over 1meg ohm, instead we get 24K ohms. Suffice to say that I've had a LOT of experience in vehicle electrical/electronics/wiring and rechecked the results. It's almost as though the Low and Off positions are reversed but there's no way to change the switch internals.
If anyone has encountered similar, please let me know what you found and if you fixed it.
Thanks

 

[BamaJohn]

Old question new problem

I am experiencing the same problem with my 91. Has anyone come up with a cause or solution. I have to turn off the ignition switch to stop the wipers.

 

[jz7p6t]

Need New Switch

You'll probably need a new switch but check your ground connections first. The problem that I encountered was that the only replacement (new dealer part) wiper switches don't exactly fit the '88 as the wiring connections are different. They may fit your '91 but if it doesn't, you may have to move a couple wires. I'm not sure which ones to move as I fixed the problem by changing a resistor on the switch. I then got an older switch as an exact replacement but my friend did not want to take the door apart again and said it was working good enough for him.