I recently recieved a PLX M-300-USB wideband o2 sensor and decided to take some pics during the install. The M-300-USB is an effort by PLX and COBB so that using the Street Tuner software you can log the AFRs from the wideband. Its pretty slick and costs the same as the regular M-300. On to the install...
The first thing I did was install connectors to the + and - wires:
I then mounted the display unit where the clock was. It is almost a perfect fit. From there I fed the wires down to the connector intended for the cigarette lighter:
I did it this may incase I ever needed to remove it from the car it would make it a lot easier.
On to the fun part: I then proceeded to remove the factory rear O2 sensor and some of its harness:
(drivers side of tranny)
(Top of tranny)
I then installed the wideband sensor and tried to follow the stock wiring placement as close as possible:
I ended up just feeding the portion of harness that goes to the display unit through the same hole in the firewall i used for the vac line and wires for the EGT gauge.
I'll take some pics in the day tomorrow but this should suffice for now... feel free to ask any questions...