I swapped mine back last year...assuming you are putting same type of cluster back in that came out, its not too hard...I removed the cluster, removed the taps I'd put in on the large black connector, checked all the wiring that I could, reconnected the optical sensor wiring for the VSS and the speedo cable.. I did have my Cyber mounted in a spare housing..Hopefully whomever did the install on your car didn't hack up the harness too badly..Going back to stock was MUCH easier than installing the Cyberdyne