RPM signal recommendation for Traqmate?

#1

Does anybody have a recommended wire to piggyback onto to hookup a Traqmate Tach signal?

Thanks,
Erik

#2

ATLe30 wrote:

[quote]Does anybody have a recommended wire to piggyback onto to hookup a Traqmate Tach signal?

Thanks,
Erik[/quote]
I’m pretty sure my TM rpm input comes from the coil. If you have an input module that can take a 12V signal then that’s the easy way to do it.

If you have a module that can only take a 5V signal, and I’m not sure that this is made any more, then I don’t know how you’d do it.

#3

Pick the rpm signal off the wire that supplies the rpm signal to the cluster. That is a clean 0-5 square wave. It is possible, via an accessory module, to use the ground side of the coil.

#4

which wire going to the cluster jim?

#5

I got RPM signal off the ECU harness. It’s one of the single wires coming out of the main trunk in the glovebox. My car is an '87.

#6

Mine was plug and play to the coil

#7

On my *173 Motronic, pin out #6 is Engine Speed output. Wire is Black 20AWG.

Confirm with the appropriate ETM.