I got an R-spec turbo timer. I've looked for wiring instructions, and other people who have it, but I havent found any, and every car i've seen with one in it is somewhere in japan. the guy who sold it to me said the wiring is like the greddy one. so i sort of have it figured, but which wire on the ECU is the speed signal wire?

 

There isn’t one. Speed isn't monitored by the ECU.

 

you can get the speed signal off of the cruise control. I hooked it up to my HKS one for fun, just go to HKS' site and look at their diagrams, that will show you which wire to tap into.

 

I pulled it from my PS unit brain.

James