The first question to ask is.....when you
turn the wipers off, do the blades drop down
a couple of inches lower than their lowest point when wiping? If they do not, then either you have the wrong motor(one for a tempest without concealed wipers) or the park switch is
bad in the motor. If the motor is too slow when wiping you probably need a new motor anyway, so
just make sure you buy the right one and everything should work when you install it. You
can only adjust the height of the wipers at the slot on the linkage that bolts to the motor.
The wiper arms will only install in one place
on a 69 GTO, due to a key on the splined shaft on the wiper transmission that fits into a notch in the splined hole of the wiper arm.
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