Originally Posted by blarchitect

I couldn't get a constant 12volt from either the original maplight feed or the sunroof controls. Why?? Because the unit would remain lit with the ignition off. I ran the constant 12v to the clock, and it works fine.

The speed sensor grey/blue wire is located on the bigger of the two white plugs that come off the bottom of the ABS unit. There are two wires with similar colouring, but the required one is pin# 1 or 2 on the right as you face the ABS unit.