I installed the tach on my dash. Looks really good. Still at a loss on where I can find a tach signal from? I had a lot of problems with my aftermarket radio install. So not looking to go through a similar situation with this tach. I am mounting it because my tach on the dash only works sometimes. When not working it just clicks in place. Any help is greatly appreciated. Been thinking of getting a VAGCOM too. Will post if I do.