Testing an analog clock?

[2nd82H/O]

Does anybody know how to test an analog clock from an 83 Hurst without putting it in the car… really don’t want to pull mine apart.. don’t want anything to break..

 

[L92 OLDS]

Does anybody know how to test an analog clock from an 83 Hurst without putting it in the car… really don’t want to pull mine apart.. don’t want anything to break..

I use a plug from a donor car with a 12 V power supply.