Yet another wiper question

[brian10048]

Been searching through the board and haven't been able to find anyone with the same problem.
I bench tested my wiper motor and it ran fine, but now when i think about it, I think i might have switched the ground and power, but it still ran.
So I put it in the truck and mount my wiper linkages to it.
Without any ground wires hooked up and only the power, the motor turns a little bit when the key is turned on. When the key is off the motor goes back to where it was with the key off.
Now I tried grounding the ground terminals to my ground that everything else in the cab is hooked to. If i remember correctly there were small sparks when grounding the top terminal, and nothing when grounding the bottom terminal.
I then tried hooking the switch up and I still have nothing when i use the switch.

Any ideas??

[VetteVet]

Try this site.

http://rmcavoy.freeshell.org/electrical.html

[brian10048]

yeah i'd already checked that site out... guess i'll have to take the motor out and bench test it again

[brian10048]

update (but help still needed):
I took the wiper linkages off the motor after finding my assembly manual and seeing that everything didnt look as pictured. i tested the motor and it ran fine and parked. so i guess the linkages were just binding up the motor. as i bought this truck mostly disassembled, i have no way of knowing if the linkages are all correct. so i was wondering if anyone had any pictures of the linkages that connect everything to the motor under the cowl for a '68.