This is from my factory service manual for my 2002 Silhouette. I will give you the colors of the wires just like the manual has them.
ORN - Battery Positive Voltage
BRN - Ignition 3 Voltage
GRY - Instrument Panel Lamp Supply Voltage - 1
YEL - DLC (Data Link Communications)
LT GRN/BLK - Ambient Air Temperature Sensor
BLK - Ground
BLK - Ground
The manual only shows 7 wires, not the eight that you have.
Hopes this helps.