tach
 

what is the best tach to get or does somebody make a kit for a first gen cummins

i don't recall the cutoff year that has the factory hookup, but autometer, isspro, or tinytach are the popular options.

Where would you find the factory hookup if you had one?

somewhere above the steering column i think. Hopefully a 1st gen guy will chime in, I've only read about it.

If you have a 89-91 you can use the Isspro tach that uses a magnetic crank sensor, both of the next 2 threads have that info. Isspro part numbers for tach - Dodge Cummins Diesel Forum In post #15 shows a pic of a tach hooked up to an alternator. how do wire in a tach in a 91 - Dodge Cummins Diesel Forum More info on the early dodge tach setups. https://www.dieselbombers.com/5-9l-r...uge-mount.html In this thread is a pic of the factory tach plug in post #5 at bottom in center of pic its black, installed in the 92-93 trucks. http://www.dieseltruckresource.com/d...t=factory+tach Heres some info on installing the tach in a 93 dodge with the factory tach plug. http://www.dieseltruckresource.com/d....html?t=173561 Heres another option. http://www.dieseltruckresource.com/d....html?t=236340