S2racerS2

I am currently installing the Inovate wide band O/2 sensor and adding the optional RPM signal so i can see exactly what the engine is doing at specific RPM levels. As a result, I need to know what cable coming off the DME is my tach signal so I can tie into it. I assume it is a big green one but I have three.

thanks

fork_included

also curious

jgporsche

DME pin 6

Bri Bro

If you state the year and make of your 944 it helps. Some have a four pin connector that makes tapping into this signal a snap. Pin 6 on my year/model DME is the return signal for the Air flow sensor.

fork_included

is it the same regardless of car year?

so if i was installing an aftermarket tach, this is where i would wire one of the wires?

mine is a 83 944

jgporsche

i was going by his name.... S2 racer...

Bri Bro

On the 83 944, Pin 1 from the DME supplied a signal to the coil and the tach. On 85.5 on, the tach signal was on pin 21 and was a low noise signal. The coil was still connected to pin 1.