door lock glitch

[Velocity3000GT]

As always, Thanks in advance for any help you can contribute.
1994 SL
I have had this car apart for a color change/repaint.
When purchased the SL it did not run so I have no idea whether this is something I did or if it was a previous issue.
Now that she's running and reassembled I'm trying to work out the gremlins.
The door lock button on drivers door actuates lock on passenger door but it does not stay in the lock position. It automatically unlocks.
No noise is heard coming from drivers door solenoid and lock slide does not move. It is stuck in the lock position only and can not be moved by hand.
Door lock button on passenger door has the same result.
Therefore the passenger door is always unlocked and the drivers is always locked.
To open the door from the outside I have to turn the key and lift the handle at the same time of the door re locks.
I picked up a lock solenoid from the pick a part and installed it yesterday thinking that was the issue but it has had no effect.
I did not remove the latch, solenoid or inside door handle when I had the door off and apart for paint.

EDIT.
Sitting here, I just realized this problem started after the radio was installed. Bought the car with an empty hole there and bought a factory radio from a friend. Got the code from Mitsu.

thanks again