I am new to this forum, I purchased a 1990 Accord 4dr 5sp/mt.
1. Crusie control does not engage, power light illuminates on on/off sw. Possible TS checks to fix.
2. I had 4 wheel alignment checked, caster was out on front & rear rt/side with camber high on both rt and left but in tolerance. Alignment made numbers better but not in tolerance on caster rt/side. Any TS checks or part replacement to fix before returning to get alignment rechecked.
3. previous owner replaced electric window rear regulator but window does not close completely. Adustment procedure;

 

I would inspect the cruise control motor to see if there's any damage to the housing or the cable and take it from there to figure it out.

If after alignment the wheels aren't corrected, there's a possibility that this vehicle has been in a collision which may have affected suspensior parts or chassis or both. Inspect the suspension and overall of the vehicle for gaps and distances of panels and then compare to the other side, it's an easy way to spot damage (if that's your case).

Remove the door panel, remove the 2 screws that hold the glass to the regulator, manually set the window all the way up, and now switch the window (press the button) up until the regulator touches and slightly forces the window up, now install the 2 screws again of the glass to the regulator, and test it up and down to see if it's now working properly.

 

you can find plenty of 90-93 accord & parts at a local junkyard.