i have a civic HX with the civic HX wire harness. i had to do a head change so i changed it to a EX head... everything is good EXCEPT the o2 sensor.

civic HX has a 8 pin, 5 wire o2 sensor while the EX uses and 4 wire o2 sensor. so i got an 4 wire sensor and the wires are 2 black wire, a green wire, and white wire. i knwo the 2 blacks are heater wire, green is ground and white is signal but im trying to connect it to the 5 wire on the hx harness the color codes is different so im trying to find out wire one of the 5 wires dont i use or if i coudl knwo what each wire do i can just hook them up..

i been searching since friday and no luck...

my old L1H1 5 WIRE sensor has a color code of .... blue,yellow,black,grey,white so can someone PLEASE PLEASE HELP ME figure this out my car is running so sluggish and crappy right now and i wasted 35 dollars alone this week so far and its just wednesday.