Help with installing gauges?

Hey guys, i just came over from the 2gnt board and really think it's cool how you gave us DSMers some space

I need your help on something. I am installing an A/F ratio and oil press gauge on Honda Civic...95/96 I think. I was wondering where to locate the OE sending unit and where you recommend tapping for the A/F gauge. On my Eclipse, I tapped the 02 wire at the PCM(computer). Any help would be greatly appreciated.

Thanks in advanced.