I own two Bosh WB sensors and a JAW. I have put it together, powered it up but have not yet been able to use it on the car thus far as it is on jack stands waiting for a tranny rebuild.
As for the wiring, thats where I came up short at. I wanted at least 20awg, or even 18awg. but have not been able to find an 8 - 10 conductor cable and any single rolls of wire are so overpriced it aint funny.
I dont know about the green colored wire you mentioned. There are six wires in the O2 sensor I believe, you buy a female connector and wire it from the connector to the JAW board. What I havent worked out yet either is a housing or enclosure for the unit.
Overall I like the system very much, I just wish he offered a more complete set up, i.e. sourced the wiring, enclosure and stuff like that. However, for the money it cannot be beat. I dont think I even have $150 in my set up but I also got my WB O2 sensors stupid cheap too.
I'll help you out as much as I can, just bear in mind I have not been able to run my unit yet. I may have to hook it up to my Rodeo and try it out there just to get used to it. If you are looking for more of a plug and play set up I would highly recommend you spend the money on one of the commercial WideBand set ups.