I shared the wondrous, fantabulous platform called rovergauge with Rico yesterday. I'll most likely make the FTDI interface plug for him since I am a dick and don't loan out my personal stuff.
only one problem I forgot to mention Rico, you will need a female plug end from another harness OR buy a new one, in order to read the 14cux sensor values. OR cut the five pin plug off at the harness end and replace it with any plug connector of your choice. Really it only needs to be three pins since two of the spots on that plug are not used.
I have a few complete, un-cut harnesses for early D1's and for a '93 - '94 RRC... BUT as mentioned, not one connector was harmed in the removal of these harnesses and I really don't want to cannibalize them... wanna buy an entire harness and you can have three of these plugs... I think there are three of them on a complete harness.
Maybe I can drive to you over the holiday weekend or the following weekend...