1980 Jimmy rear window tailgate switch

[Keeks2915]

I apologize in advance, but yes I tried searching and tried all the catalogues.

My jimmy has a rear tailgate window that works decently up and down from the dash switch.

But the key activated switch in the tailgate only will raise the glass, not lower it.

Can anyone point me to where I could buy a new switch, or is there a potential way to clean up the one I have? (preference would be a new one).

Thanks