ok after searching all the internet I still cant find anything telling me where th speed sense wire is. I just got back from the SEMA show and got a heads up display. I found one site that said it was a white and black wire in a small harness under the power brake booster, I cant find any harness under the brake booster, does anyone have any pics or info on where I can tap the speed sense wire, I have a 04 6 speed if that matters.

 

let me dig up the diagram for you...

 

went over to circuit city and got my buddy to pull up the wiring and its the green/red wire that is in the main harness for the radio