[PHATAL]

See this from a rando on Fordmods - It kind of jogs my memory - I reckon I pulled apart the old clock connector as well:

i did end up getting the trip computer installed and it works perfectly. I used a couple of the clocks wires and piggybacked on the rear demist wires for the dimmer signal. I ran a new wire from the right side plug on the instrument cluster for the data line described in the 'How To' guide in the Tech Docs. I actually dismantled the instrument cluster plug and the original clock plug and transferred one of the connectors to ensure a solid feed.