Hello Guys, I could use some advice / help . I have. 68 SS Impala with what I’d call the standard gauge cluster ( less tachometer ). I have seen SS Impalas with the upgrade gauge cluster and they just look so much better. Will my existing wire harness work with the upgraded cluster? Or do I need to locate a new wire harness ? Oh, I have the T- 400 trans. If that makes a difference. This project started with a scratched plastic lense and non working clock. Thanks for any help . Marty