Cummins Tach Sensor Wiring

There appear to be 2 harnesses red black wires in 1 green white in the other.

Cummins tach sensor wiring.

I am replacing the tach because it will intermittently stop working. I measured about 3v ac at the signal wire. The original is no longer available. Cummins will sell the sensor but they don t have wiring diagrams available.

Tach needle bumps when i switch on the key but no rpm reading. The tachometer is intermittent random. Provide a smooth reliable tachometer signal to your cummins converted truck. Model 8912 is a dual output four wire magnetic sensor.

Provision has been made for finer adjustment if. It fits a x 16 tpi threaded hole and is used to sense the passage of gear teeth. T urn key ìonî ó tachometer pointer should move to ìzeroî. By utilizing the oem dodge cummins tachometer sensor whether cam or crankshaft position respectively the swaphelper then provides the correct signal to the receiving truck s ecm.

Having a little trouble with the wiring on this need a simple wiring for dummies course. The swaphelper is an electronic signal conditioning device. Calibration and adjustment the tachometer is factory calibrated to 3 full scale accuracy. If not check wiring.

8912 flywheel gear sensor dual output x 16tpi 2 1 2 long. You have to keep the cam sensor and the crank sensor wires seperated until you get to the sensor then wire them together if you run them together they will pick up signals from each other and cause problems the shielding on the wires is crap i think you can wrap one in aluminum foil but that is a pain and doesn t look very good. My 1997 dodge ram with it s 12 valve cummins diesel engine has had a strange intermittent problem that s gotten worse. When wiring is complete connect power.

Hi all i have a cummins 6bta with an alternator driven vdo 4 tach.