you need to buy a fitting kit for the TT. This will plug into the 4 pin plug on the TT, this then splices into the ignition loom at the back of the ignition barrel.
The purple wire on the 3 pin plug is for the handbrake saftey and the orange wire is for the engine speed signal.
The white wire is for Auto cars so dont bother with it
The hose coming out from the TT is for boost presure, you need to run the hose to a soleniod that sits on the inside of the n/s/f wing. The narrow hose that runs from the solenoid has a joining peice about a foot from the soleniod, remove this and insert a "T" piece in its place. Conect your hose from the TT and your ready to rock.
I hope this helps mate as im not usally the best at explaining things
