I remove Volvo clusters from the salvage yard and wanted to know how I can power up a 2000 S80 cluster. I have the plug in the back I am just not sure which wire needs power and which is the ground wire. I am afraid to try it without proper direction. Thanks for help in advance.

 

Do you have a car with the plug still intact you can test to see which pin is powered?

 

I have the plug. I dont have access to the car it was removed from.