Tachometer signal

[Mark0]

Right now using AutoGauge aftermarket tachometer which works and shows current engine RPM. But in other hand, on car cluster it doesn't work.

Using P259 channel 0 divider 16
Maybe 1k ohm 1/4 watt pull up resistor would help

[MWfire]

Old car?
Some old cluster needs more than 50V to trigger. That you can solve with
https://shop.vems.hu/catalog/inductor-p-102.html

[Mark0]

Mhmm, not old. Audi S4 2001 bi-turbo

[MWfire]

Then it should works if that car hasn't signal from canbus.

[astit]

I'm using too an aftermarket tachometer on an A4 2002 and works like a charm. I can't figure out why it's not working a yours.

[Mark0]

Aftermarket one works fine, but on cluster not. And yes, RPM signal via canbus.

[Kamuto]

Aftermarket one works fine, but on cluster not. And yes, RPM signal via canbus.

so that means it wont work :)