R32 GTR Cluster/ECU Readouts?

[californianhunger]

Hey all, I'm looking at building a custom display using a few things like Raspberry Pi, Arduino and Qt5; I have built something similar before for our E36 race car, but wanted to know how to interpret the following readings from the car:

• RPM signal - is this just pulses? And is it 3 pulses per crank revolution?
• Fuel signal - is this voltage or resistance based (assuming I am tapping the wiring at the back of cluster) ?

I'll use the usual 2-wire RTDs for water and oil temp, and a linear 0.5-4.5V sensor for oil pressure, GPS for speed, and perhaps a MPX5700AP for boost.

[GTSBoy]

RPM is pulses. The pattern should be shown in the workshop manual. I can't be arsed looking it up.

Fuel level is a resistor.

[californianhunger]

1 hour ago, GTSBoy said:

RPM is pulses. The pattern should be shown in the workshop manual. I can't be arsed looking it up.

Fuel level is a resistor.

Sick, thank you!