Hi all I wired in a Dakota Digital Dash for the GN. All works great but having an issue with the Tach. When I do a cold start the Tach bounces and will also just cut out completely. Then start again intermittently and keep bouncing then cut out. Then when the car warms up the Tach works fine. I was thinking it was a ground but why does it work when the car warms up? This has been going on for a month now. I have driven it multiple times and same thing each time. I checked wiring and all looks good. Im looking to buy the Tach buffer from DD. Could this work. Just don’t get why it only works after it warms up. Thank you.