Well I sure feel like typing a couple of expletives. I have fallen afoul of Bentley, and in a pretty silly fashion. NO excuses though, I messed up.

On the schematics, #6 is at the top of the 31 plug. It's at the "point" of the keyway. It does indeed go to the bulb failure bulb, not 203 and the top speedo pin.

There's only one problem: The diagram is upside down. Based on your message, I just went and pulled a plug out of my box of wiring goodies. #6 is on the bottom of the key, #12 is on the top. #12 goes to the bulb failure lamp. Gasp! Holy dyslexic deception, Batman. I should have checked this when Yama mentioned something about the numbering being in question in the Green book.

Thus, 6 is indeed the same as the double spade lug and the top pin of the speedo head. Since that is now the terminal going to pin 34 on the ECU, that is the VSS and you are saying the cruise, upshift and ECU all use the same signal? In a pinch then, one could pull the #6 wire from the 2.4 #31 plug and hook it to a 2.2 cluster's 203 terminal and have the right signal for the ECU.

DS