Fuel Level Sender Integration with ECUMaster Black (BMW 325i E36)

EMU BLACK / CLASSIC
1

I am currently working on a project involving my BMW 325i E36, which is equipped with an ECUMaster Black ECU. I intend to use the original fuel tank, pump, and fuel level senders. However, I am unsure how to properly connect the fuel level senders to the ECU’s analog inputs.

The two fuel level senders are connected in series, with resistance values of 20 ohms when the tank is empty and 500 ohms when the tank is full. Could you kindly provide guidance on how to interface these senders with the ECU’s analog inputs to ensure accurate fuel level readings?

Thank you in advance for your assistance.

2

The idea must include not only accuracy, but also current calculations, and heat dissipation. Simply, id you use pull-up resistor cca 470 Ohm, you wil have cca 0,2-2,65Volt resolution what seems to me reasonable enough. Current will be at arround 0,01A , and heat disipated will be cca 0,05Watt.