The red isn't live (sorry for not responding sooner) the read and white are the equivelent to the white and green on the acewell, so from the teratrip you need to connect its red to a live and the other two wires need to go one to the red on the speedo and one to the white, if they dont work then switch them arround, It is the teratrip that needs to be wired to a live feed not the speedo.
That said if you go the Acewell route we will have it up and running in no time as Stoneleigh.
You will need to bring the teratrip sensor, some red wire (for a live feed) and two other pieces of wire, I woudl recomend using the same colours as the wires on the Acewell or the Teratrip (when I did mine that was white and black for the teratrip but mine is a gearbox mount rather than the speedo cable mount)
You will need a speedo cable.
Some terminals (the terminals can be sourced at the show if need be)
Cable ties to make it all tidy
crimping tool
snips
screwdrivers
plyers
Jr Hacksaw (metal blade)
(Ill have all of these tools with me at the show apart from the Jr Hacksaw so don't worry about them)
Simon