I did have a post on using the wideband in my DeLorean but I guess it was on the old crashed site.
When you buy a wideband unit it consists of the wideband sensor and an electronic unit to drive the sensor and provide an output. The unit I have is an LC-1.
http://www.innovatemotorsports.com/products/lc1.php
You program the LC-1 via a USB to RS-232 cable driver. The LC-1 has two analog outputs so you can program them to simulate what the narrow band sensor outputs (0 to 1 volt). I have one output programmed to output 0.5 volts at 14.7 AFR and the other output to output 0.5 volts at 13.0 AFR. I built a switch to drive one of those outputs into the normal one wire (signal) and ground inputs into the stock lambda ECU.
I also built a little circuit that takes the LC-1 LED fail code output to drive my stock dash LAMBDA light. So when you put the key on, my LAMBDA light will flash for about 15 seconds until the LC-1 has warmed up the sensor and is running closed loop.
The wideband sensor replaces the original narrow band sensor in the same bung. But that wideband sensor has a very large connector on the end of the cable so you can not run the wiring like the OEM setup unless you remove the connector. You can not pull the connector pins so I cut the wires and installed small pins that crimp onto the wires. You cannot solder onto those sensor wires. I think the wires are nickle plated.
I will look for some old photos to help if you want to do the same.