chevy cummins with 4l80e
 

hello i have a tci tranny contoller and trying to find a tach signal on a 12 valve p pump b

series engine i bought this project resent they had it hooked to alt but when i hooked the

laptop to the tci contoller it was reading 4000 rpm at idle any help would be much

appreciated thanks !!:jump:

Crank sensor reads of the harmonic balancer :c:

The engine does not have one could I buy a stock one and put it on it and which wire would i use? I looked them up they have 3 wires comming out

thanks!!