a/f gauge ?

[DaytonaConnection]

when adding wire tha a a/f gauge wire does it need to be anything special, or just the same size....

[toddipoo]

Power wire from the gauge or the wire that connects to the O2 sensor?

It really doesnt matter all that much. It doesnt take much I Have 18AWG to my 02 sensor and 18gauge for power wire.
Make sure you connect the ground to either a very good ground or directly to the negative terminal for the most accurate measurements

-toddi

[DaytonaConnection]

i just need to make the wires longer to go where i need them...

[william]

I used 20 or 22 guage on mine. Make sure everything soldered where possible. I used inputs right from the logic module in my car to connect the 3 wires.