RPM gauge not working after 496 swap
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Recently went from a 2000 350 mag mpi to a 2007 496ho and now my rpm gauge does not work. Work perfectly before hand it's getting power and even moves when turning the key over but will not read. The harness has the same amount of pins. Check with a light tester as well to make sure. It's driving me crazy. Any direction on where to look will be greatly appreciated.