Nah, He didnt !
Thats the scary part. The Trip computer is still getting all its signals from the EEC V ???????
The Trip computer is wired as per Standard Ford Factory Wiring.
The only thing I can think of is that even thought the injectors are not used, the Trip computer still makes some adjustments as to the actual Fuel Level, Engine Load, Distance Travelled, Speed, etc, from the standard Ford sensors (All shared with the LPG System).
I dunno much about LPG systems, but he is telling me its not the best aftermarket LPG system you can get, and also he told me that the LPG Computer is not connected at all ?? (Should have improved fuel economy and power if it was).
My advice would be to give it a go.
If you were able to get a Trip computer, and it didnt work, then you could flog it off at the same price you got the thing for.
(No big loss, just an hour or so stuffing around adding the extra wire.)
If you want information on where to connect the wire, let me know !