Dean Snow

i tried hooking up a tach from my nissan gasser, it was a universal tach, so i hooked it up to the Grey wire with the blue stripe and it didnt seem to work at all, is there something with these diesels you need to do or buy for a tach to work in it

ofcmarc

Some of them work, some don't. My autometer z-series runs at about 1/2 speed hooked straight to the factory wiring.

Dean Snow

can u run a tach from anywhere other than the factory wiring to get it to work correctly?

Ace

I got this to go with the $30/used ISSPRO tach I found on Fleabay. Easy install, been working great for a year and a half, solid, no probs.

http://www.egauges.com/vdo_indS.asp?...nsors&PN=R8912

It's basically just a crank sensor, probably same or similar to what was used on the 92-93 trucks.

PToombs

This widget will let you use a gasser tach with diesels, http://www.dakotadigital.com/index.c...rod/prd128.htm

gomerpile

well on mine i just used a sunpro tach, i set it to 4 cyl. on mine i hooked it up to the factory harness by cutting and splicing, no problem reads from 500 rpms (idle) to 3000 ( full rev/out of gear)

Firstgenfanatic

Has anyone on here used a big rig tachometer? I have a local heavy truck wrecking yard that sells tachs for $20. Many styles and sizes to choose from? I wonder if they would work on my 1st gen Dodge?

gomerpile

well theres also one called "tiny tach" and it has a pickup on your injector lines and when it senses a pulse of fuel it calculates it to rpms

BC847

I just installed a tach in my heap, perhaps this will help a little ~ https://www.dieseltruckresource.com/...d.php?t=173561