Bosch Mustang O2 sensor splice- anyone done this?

[d.delano]

I'm going to try splicing in a '90 Mustang GT O2 sensor Bosch part# 13953 to save about $90 over the cost of an MB sensor. I have located the female connector for this(Ford part#AUVC927082-discontinued- found one at O'Reilly item #PT5690), and plan on soldering the plug end from the old sensor to this female connector so that future sensor changes can be plug 'n play. $40 for the sensor and $13.50 for the plug beats $145 for the correct MB sensor, especially since both sensors are identical save for the end plug. Has anyone done this? My question relates to how to determine which wires go where. If anyone has any experience relating to this procedure I'd be grateful for any knowledge- thanks.