[OAC_Sparky]

There is no "tach signal" at the cluster like your friend's Honda, our clusters use a different method to communicate with the ECU.

Pre-2005 cars, you can use Pin 48 to get a tach signal.

To find the correct pin.

Remove th ECU plug. Looking at the face, there are 4 rows of pin sockets, with a gap in the middle (for the screw)

Orient the plug so that the wire at the UPPER LEFT is a GREEN wire with a BLUE stripe. This is PIN 1

Pins are numbered LEFT to RIGHT -- LOOKING at the FACE
Each row has 26 pins
Row 1 >> 1 to 26
Row 2 >> 27 to 52
Row 3 >> 53 to 78
Row 4 >> 79 to 104

So pin 48 should be in the second row, fifth hole from the right.

Conversely, if you don't remove the plug, it would be the second row, fifth hole from the left if viewed from the back of the plug (where the wires go in).

Apparently, there IS no wire in this spot, so you'll have to jam a wire in there (nothing to t-splice into).

2005 and up need a tach driver. The how-to is here:

http://www.focusfanatics.com/forum/showthr...&threadid=54447