Ok I bought my Type-0 TT used and didnt come with instructions. I have the 02wrx harness to plug straight in. I'm confused about some wires on the TT itself. What is the grey and brown wire? I know the black wire is for a ground, but then it has a grey wire spliced onto it. Also on the 02 HKS harness seperate from the TT, there is an extra grey wire...anyone know why? I would greatly appreciate it if someone has some ENGLISH instructions they can provide me with for specially the Type-0 TT. Thank you. :)