Ok I have a 99 24v cummins 5 speed.. it's smokeless. How do I install a smoke switch... I also have a 75 horse.. bully dog pup chip.. but the plugs are different than my ecm plug.. Also I am buying a tachometer. An I have no idea how to hook up a tachometer in my diesel.

 

Smoke Switches are not to difficult, but many of us here will not recommend them, get yourself a nice set of injectors instead. if you are persistent about the smoke switch there is other very detailed threads on here that will tell you exactly how to install one. if you want smoke put a rag on your air filter, if you want power come talk to us. the smoke will come