What tests or checks can be made before installing a 560 Instrument cluster?

[Jack M]

I have a replacement cluster for my 86 560sl. I am replacing the old one because the clock does not run and the speedometer is intermitant . Some times at Zero other times at the correct speed. Every thing else works fine.


What can I check before I do an installation?
Can the odometer be easily reset to the current mileage?

Thanks, J

[rowdie]

The answer to the last one is no. Don't know about the others.