ok I was looking for a place on the fire wall to run my oil presure wire for my autometer gauge and can't find a hole somewhere.. also I happened to have a narrow band a/f gauge im gonna install until I can afford a wideband so which wire do I splice on the ecu colors description ect.. the car is a 92 integra thanks in advance

 

i just put an autometer AFR gauge and OIL pressure gauge in my 95 gsr, for running the wires, i did it the RIGHT way and drilled a hole in the firewall and installed a bushing and routed wires through it, as for the ecu tapping into the wiring, i think it was a purple wire, but it goes to the O2 heater pin i believe, not sure on your ECU. but thats how it worked on mine.

 

so theres no other holes that other stuff runs threw instead of drilling holes myself...

 

Electric Oil Pressure Gauge!!! I used to have a mechanical one, it work great but scare the **** out me when it started leaking in the cabin.