Wiper motor operation on high only

[Sixt8Chrgr]

Per the above, my wiper motor will only operate on high and will not park. I have not down the test in the FSM yet but am aware of the sequence with the jumpers. Was curious if these symptoms may be solved with a new ballast resistor that is on the wiper motor. Not the ignition resistor but the one on top of the wiper motor.
Thanks!

[b5blue]

Clean and wiggle all the wire connections under the dash and on the motor first.  I use Caig Labs D-100 DeOxIt.

[Sixt8Chrgr]

All connections are good. My washer, low speed wipers and parking the wipers don't work. Seems there must be a common 12 volt supply I don't have. Anyone have any ideas? By way of background, I restored the car and it has all new wiring harness firewall forward. I had the dash out when restoring the car and confirmed all connection good.
Thanks

[metallicareload99]

I think you might be on to something with the resistor and the low speed, but with the wipers not parking, I think you have additional problems with the wiper motor itself. Might be time to rebuild or replace the wiper motor