Just so you know...you could probably put in a RJ45 (LAN/network connector) setup similar to the Scangauge II setup since there are only 8 wires in the wiring.
Chances are that you could even use the Scangauge cable if you pin that out and wire out the Ultragauge to accept it.
Spare Scangauge cable fer $20 plus shipping...
Buy Direct : Linear Logic - Home of the ScanGauge