if this is the the purple wire off the tt to the 'speed sensor' wire yes its wire 53 yellow and green yes there are a few of them hmm i think its green with yellow stripe but not sure of the top of my head if you have a ecu layout you be able to find it piss easy.. is the the fully auto turbo timer the silver or black?? there good timers i have one in my 32 use the speed thingy all the time my speedo's out by 10k;s