1st i lubed my trico vacuum wiper motor with Dot 3 as i've read that works well. Next i hooked up a vacuum hose to one of the two ports on the side of the motor. when i turned the switch, the mechanism rotated and stopped. when i turned the switch again the mechanism would rotate back to the other side, but the mechanism didn't keep rotating back and forth as i was hoping. do i need to hook up 2 vacuum lines to the two ports on the side? what is the center port for? any help is appreciated.
A quick google search found a motor very much like yours. Looking at the motor, you will see four vacuum ports. One, Two, Three and Four. One and Two need to be capped off. Three is the one connected to the vacuum source and Four is left open. Let us know how it goes!
