here you go...(it will work with both the little and big shift-lite from Autometer)http://www.newc
read from point #7 since you have everything installed already.
Advice: Do not run the green wire from your shift-lite to the "brown with a white stripe" wire directly on the ecu. Instead, locate that same wire on the back of your stock tach gauge (take out the gauges panel, its easy).
Hope it helps...I have the 8k rpm pill on my GTS, it works great.