Speed Signal Wire?

[timma]

im fitting greddy turbo timer and need to know which wire is the speed signal wire. i currently have a sk power digital speedo timer installed but got the greddy as a present so if anyone knows which wire is speed signal wire that would be awesome as i have no instructions for the sk power timer. thanks

[RRob]

Its a yellow wire with a green trace. Can't remember pin # off the top of my head tho..

[timma]

thanx. its pin 53