The wiper on my 67 Skylark does not self park. The Service manual says to check grounding strap (I don't see any at the motor) and to check the parking contacts within the motor, but has not instructions on how to access the parking contacts. Hoping someone here has dealt with this issue before and can provide some guidance and pics. Thx, Byas
on my 71 it is the ground is on the wiper motor itself and is in one of the mounting holes. ---------- Post added at 11:57 AM ---------- Previous post was at 10:57 AM ---------- on my 71 it is the ground is on the wiper motor itself and is in one of the mounting holes.
There is also a ground strap on the switch. At least that is the way it is on the 70-72. I would bet you have something like that too. That is your problem.
I added a ground wire from the washer pump mount screw on the motor asm to the voltage regulator mount and that solved the park issue. Then after reading a post here I located the ground strap on the the motor asm, and tried cleaning as much as I could without taking the motor asm off the car -- this did not work. So left the additional strap on there for now. Now that it is parking, I noticed that the wiper switch does not seem to work consistently. When I turn it to Lo speed it does not work until I push it in in that position. Same on high speed position. I do get the 2 speeds, but they work only when I push it in (which I think is actually to activate the washer pump). So now need to sort thru that. In the meantime, I do have a new washer pump on order.
I, back in 2000, when I purchased my '72 gs had the same problem with the wiper blades not parking (hidden wipers). there is a ground wire for the wiper switch that was not attached to the ground. solved the problem. however, there is also a parking circuit in the wiper motor and when it fails the same wiper parking problem occurs. I tested 2 "rebuilt" wiper motor and both were useless due to the failed/unrepaired parking circuit.
There does not appear to be a ground strap on the 67. The body of the switch grounds to the metal dash via 3 small nubs on the mounting surface. Cleaning out thee nubs with sandpaper, restored the connectivity and the wiper switch now works at both speeds. For each problem I solve, a new one seems to emerge though... I installed a new washer pump before cleaning out the contacts on the switch. And prior to cleaning the switch, the only way the wipers worked was when I pushed the switch in to activate the pump. After cleaning out the wiper switch ground and getting it to work, I now have the washer pump working every time I turn the wiper on instead of just when I push in the switch. While plugging in the wiring for the new washer, there connector could be plugged in either way. I'm hoping I just reversed the connection and that changing that will fix this new issue. B
u have the wiring for the washer pump miswired wired to the same power wire that functions the wiper motor.
Actually, not. After spending a bit of time trying to figure it out, I finally solved the issue. The washer pump is actually mechanically operated and is not electrical. The electrical connection is just to power the relay that engages the mechanical drive of the pump and the relay operates the same with either polarity. The cause of the problem turned out to be that I was using the original 4 lobe metal drive cam that was on the motor assembly instead of the plastic replacement that came with the new pump. I assumed they are the same. Bad assumption. The new cam is slightly bigger than the original and the new pump needs that larger cam to operate fully. The smaller cam prevented the pump bellows drive from decoupling from the cam and so the pump worked whenever the wiper was turned on. Replaced the cam - and now it all works as intended. While I was at it, I cleaned out the ground strap as well and now the wiper works without needing the additional grounding wire I had installed. Original metal cam: New plastic cam is larger in diameter. Removing old and installing new was easier with the motor off the car.
