Although it doesn't look like anyone is using a Race Pak dash I'd like to propose the following ;
I've been told that some SM racers with digital dash's use the OEM Miata fuel gauge
Any issue's with installation ?
From the wiring diagram it appears to be 12v+ and a ground to the gauge with a 3rd wire from the sending unit
Are there connections on the back of the gauge ?
I'd rather like to stay away from configuring the Race Pak for the fuel gauge as, from the 100pg manual, it looks complicated