oil pressure gauge

Well today I bought an oil pressure gauge and I cant figure out how to run the pressure hose to the block (h23). I'm sure someone has put one in before so a little help or even some pics would be very apperciated.

help!

Im really not sure but its a guess in the dark, its a mechanical guage? i would guess you can just tap into the oil filter lines that run out of the oil filter houseing, just make sure you get the pressure one, i could be wrong but im thinking of the B20A5 engine and they have rubber hoses comeing off the oil filter houseing, beats tapping the block or something, let me know if i helped or if ima complete idiot. ha ha good luck