I have a problem with the wiper door closing on my '69 before the blades come to a complete stop. I searched the archives and Jack Humphrey posted an excellent thread explaining how the whole system functions. I now understand that this relay located on the RH side beneath wiper door can be fine tuned to control when the wiper door should close.
Since I have hand pump and a vac troubleshooting guide I decided to test this relay. I have my original and a new replacement out of the car and they both fail the vac test for the unmarked port. Possibly, I'm interpreting the instructions incorrectly?
Should the unmarked port hold vacuum when spring loaded button is pressed in?
Reference:
https://www.forums.ncrs.org/showthre...tment&uid=5977
Thanks,
Pat
Since I have hand pump and a vac troubleshooting guide I decided to test this relay. I have my original and a new replacement out of the car and they both fail the vac test for the unmarked port. Possibly, I'm interpreting the instructions incorrectly?
Should the unmarked port hold vacuum when spring loaded button is pressed in?
Reference:
https://www.forums.ncrs.org/showthre...tment&uid=5977
Thanks,
Pat
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