So I bought an instrument cluster off of eBay out of an 08 Charger srt. The mileage now matches my cars actual mileage so it was time for the install. Well i swapped them out and as soon as I turned the key, the needles all dropped down very far even, down where the evic display and other idiot lights are. I put the needles where they should go with the car running and they all worked fine but as soon as I turned off the key and and opened the door, I tried it again, and the needles dropped way down again. Is there a way to calibrate the cluster or did I just buy a bad cluster? Thanks for the help.