Haltech to microtech dash

Hi. Does anyone know how to configure a Haltech elite 200 to a microtec dash? I’ve got the haltech dash setting switched on and the microtech dash is configured to Hal2 but no joy.

I don’t have a m5 cable (it’s a older stable printer cable) but I can flick through the dash as a hand controller to set things up. I’ve been told I might need to run a resistor in line but I’m not sure.

Any help would be great