Starting a new thread as I don't think this problem is related to others I'm addressing. So I finished swapping my instrumentation cluster for one with working needles. Reconnected battery, test drive worked OK. Shut car off & door locks now continue to cycle closed. Click-Click-Click. It doesn't stop. Car's off, key's out, door's closed, & I'm outside car and the locks continue to cycle. I have to disconnect the battery to stop it.
Is this due to a short to ground somewhere? If so, is there a common spot where this might occur to cause this symptom? Is this another symptom of a bad ECU?

 

Mine did that when my door lock actuator was going out and the door couldn't lock itself completely. Try manually locking the doors instead of using the power locks button.

 

I had a similar problem in my MR2, would lock itself randomly and then got to the point it would always be trying to lock. Problem was broken wires in the wiring harness between the door and body. There turned out to be a bunch of 'em broke in there. When I finally got everything spliced, I got my pwr windows, mirrors, and locks back and the clock on the dash started working again as well.