Need help with power seat operations

[N2BUICK]

Looking for someone on the site that has first hand knowledge of troubleshooting the driver power seat.
I have a power seat track I'll be selling to a board member if I can guarantee it is working properly.
I replaced the cracked housing some time ago. I put 12v to the unit and got basic operations. Before I boxed this item and finalized the deal, I decided to recheck the operations. Found all was good except the motor end of the assembly would not retract (go down) after extending up.
Oddly I can get it to go down when I reverse the polarity.
The switch im using i something I had laying around, maybe from an 86 GN?
The seat track is from a 87GN, but the switch looks different. It plugged in and works, I didn't suspect a problem until now.
Any ideas on pinning down the issue?

 

[pacecarta]

plastic gear box is 86 and earlier , single motor
the 87 up has 3 motors, no gear box
you need the correct 86 switch for the track you have

 

[N2BUICK]

Thank you sir, i knew someone would recognize the issue. The motor and trans are good just needs the correct switch.

 

[pacecarta]

heres the wire diagrams

 

[N2BUICK]

The diagrams are they both for 1987 regals? The first one speaks of right side seat control? Must be big car stuff?
Thanks for the diagrams BTW.
Do you know if it possible to remove a 1987 set up and replace it with a separate trans and motor?
This guy is going to ask me this.

 

[pacecarta]

the first pic is the three motor 87
the second is the earlier (86 and older) three motor , Left seat applies to regal
right seat is different in that wiring at switch is reversed so up is up and forward moves forward etc

86 single motor or 87 3 motor ... the tracks bolt up and plugs in the same
as for swapping a transmission style single motor setup onto a newer 3 motor track i would assume its possible with a little effort

 

[N2BUICK]

This guy who needs a seat motor or transmission probably doesn't know what he needs, yet. Thanks for your help