Cummins Tach Sensor Wiring

Model 8912 is a dual output four wire magnetic sensor.

Cummins tach sensor wiring. When wiring is complete connect power. The swaphelper is an electronic signal conditioning device. My 1997 dodge ram with it s 12 valve cummins diesel engine has had a strange intermittent problem that s gotten worse. I am replacing the tach because it will intermittently stop working.

Cummins will sell the sensor but they don t have wiring diagrams available. Calibration and adjustment the tachometer is factory calibrated to 3 full scale accuracy. I measured about 3v ac at the signal wire. Is there a simple diagram or better yet a picture on how to wire this.

Start engine and check gauge for proper operation of tachometer. 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. 8912 flywheel gear sensor dual output x 16tpi 2 1 2 long. If not check wiring.

It fits a x 16 tpi threaded hole and is used to sense the passage of gear teeth. Hi all i have a cummins 6bta with an alternator driven vdo 4 tach. There appear to be 2 harnesses red black wires in 1 green white in the other. Tach needle bumps when i switch on the key but no rpm reading.

Provide a smooth reliable tachometer signal to your cummins converted truck. The original is no longer available. I installed a faria unit actually 2 and got no reading. 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.

T urn key ìonî ó tachometer pointer should move to ìzeroî.