Tacho input to PMU 24

GENERAL
1

Hi, I have a MSD ignition 6AL which has a 12v square wave output at 20% DC for the Stack dash tacho. Car is on carbs and coil so no ECU.
What’s the best way to connect RPM to the PMU 24 for logging?

2

PMU unfortunately doesn’t have a digital input for this.

Does the Stack dash have a CAN connection? You’ll need a device in between the 6AL and PMU to be able to data log rpm.
I have seen this request a few times now and hopefully in the future the PMU gets revised with a digital input or two…

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