Audi S4-GASM

Does anyone know what color the speed sensor wire is going to the cluster from the ECU and on which plug it can be found. I have tried cutting the white/blue wire on the brown plug at the ECU, the brown/red wire on the green plug at the cluster, as well as cut two white/blue wires going to the blue plug on the back of the cluster and I still have a speed signal. I need to know which wire it is so I can install a speed ratio adapter. I searched the forums and found that it was supposed to be a "white/blue" or a "brown/red" wire, but apparently not. If someone could let me know which wire to tap or post wiring diagrams of the ECU or instrument cluster it would be much appreciated.

Jeff Vader - boscoj

I thought pulse was on ground.

Audi S4-GASM

But I don't know if this is actually correct since none of the other information I found through searches seemed to work.

BLK01S4

I thought it was Speed == ECU Pin 54 (white/blue) wire

Audi S4-GASM

But I've got to get the one going from the ECU to the speedometer in order to not affect the ESP/ABS system. What I need it for is to place a ratio adapter inline to change to speedometer reading.

BLK01S4

<img src="http://i2.photobucket.com/albums/y15/blk01s4/wiring1.jpg">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/wiring2.jpg">