handbrake needs to be earthed,, (negative)
acc would be ur accesories (keeps ur headunit, air con etc etc on while timer is on,,, thats my guess),, you will probably only need to connect ONE of the ign wires,, can't remember which one,, try one and if the car turns off with TT on,, then try the other one.
if you remove the covers from your steering column (behind steering wheel), you should have a 3 pin plug there (red, blue, green i think). Thats all you need + earth to hook it up
Even if you don't hook up the handbrake wire, the TT will still work (or just earth it to the same place you earth the TT ).
hope that all makes sense?
any more questions, just ask,,