08-24-2004, 04:23 PM
I havent hooked one up to a focus yet but there should me how to in the box of the gauge. There is the ground, 12 volt then the wire you connect to the o2 sensor. Thats how it was on a 98 Nissan 200sx. There really easy to install.
PS. It was black ground, red 12volt then purple to o2 but you may want to double check that...
PS. It was black ground, red 12volt then purple to o2 but you may want to double check that...