I can't say what the US wiring is. I would have thought that somebody with a US manual would have posted a scan of the wiring by now.
To help us with this.
All I can see is that the tcu can be removed. The new speed sensor is a Hall effect, and the output should be a square wave of 5 Volts to zero Volts. Unless there is some thing else that I can't see. The sensor needs a supply voltage to it, a ground, and the white output wire connected to the Red/yellow wire that is at pin c6 at the TCU plug, to drive the speedo.
I assume that the 12 volts that is fed to the sensor is regulated to 5 volts at the chip?
Harvey.
