Hey, Anyone know how the factory in dash tach operates in a '69 Mustang? I dont see a wire going to the negative side of the coil. I have a wire diagram and it doesnt show a tach wire at the coil either. Mine works, but I dont know how it could, and I want to use it with a Mallory ign amp. I dont want to burn it up wiring it wrong. Thanks
- posted
20 years ago