EF OBD1 4 wire O2 wiring help needed

[zeroyon]

hey everyone im new here. ive been reading alot on this forum but never joined until now. i have an 89 civic hatch DX with a D15B7/D16Y8 mini-me swap converted to OBD1 and i have a few small issues. i had a shop do the OBD1 conversion but they didnt wire the o2 sensor because i didnt have one at the time of the swap. i called them up afterwards and they gave me directions on how to wire it up. i hasnt worked since. so my question is, i need the pinouts to where the 4-wires from the o2 sensor wire to the OBD1 ECU. and i know there are 2 black wires. some people say it doesnt matter if they are switched. some people also say that one is power and one is ground.
any info will be greatley appreciated.
thanks

 

[D16SiHatch]

if i recall the colors on the o2 should be 2 black, 1 green, and 1 white. both blacks are for the heater, and it does not matter which of the heater wires off the ecu you hook them up to. green is the signal wire, and white is ground.

for where they go to at the ecu you'll have to check an obd1 ecu pin out.