which wire do i connect the gauge to on the o2 sensor? is it the white wire on the plug before the o2 sensor? also, do i need to solder it on to the wire or do i just connect them?
thanks for the help!

Crap I lost all this info I had but yes I believe it was either white or blue or whitle/blue wire. Something like that. And don't go cheap with wires going to the ECU, Solder it.

Here you go...this is how I did mines, solder the wire also.

http://www.hondaracing.ca/installs/airfuel/index.htm

thanks for the info...i'm going to finish connecting the wires today.

make sure you do not shortcut the hookup, you will damage your O2 sensor....TRUST ME

Right just tap into the big white wire at the ECu (closest to the seat).