22re 4 wire 02 sensor..wiring

[HanselMatthews]

i have a pickup 91 xtracab 22re engine.

i need to match the 4 wire 02 sensor (2 black, 1 white, 1 blue) with the 4 wires that came from the engine. my plug connector got to close to the exhaust pipe and melt. SO i can not tell how the were matched in order to replace the plug connector. NOw my truck has the o2 sensor disconnected and it is consuming too much gas.

PLease if some one just tell me how do they match i will apreciated.

regards,