Wiper Motor Testing

After coming to the end of my 2 year rebuild, I connected up my wiper plug to the wiper motor and noticed after a while that smoke was coming from the motor (the switch must have been on)

I assumed that the mechanism was seized and that I have burnt out the motor.

I have tried another motor from a donor car but, its not working.

The fuse and relay are OK (the windscreen wash is working ok)

How can I check that the motor is definately not working before I go and get another one?

I removed the mechanism and held the motor against the bodywork and ran a cable from the live on the battery to the red connection on the wiper motor, but no joy.

Is this a valid way to test the motor, or am I missing something.

If the motor is no good, I off down the scrappy to get a mk2 unit, but would like to check first.

Thanks

Check the column switch as they melt very easily.