kday

It probably makes more sense to buy the whole kit from ross-tech, but if you like to tinker with electronics, then FYI Jeff Noxon's <a href="http://www.planetfall.com/~jeff/obdii/">opendiag</a> circuit works fine on the ur-S cars. I made a few modifications (added LEDs, changed connectors and form factor), but nothing vital.

<img src="http://pictureposter.audiworld.com/66084/sdscn8299.jpg.jpg">

<img src="http://pictureposter.audiworld.com/66084/sdscn8306.jpg.jpg">

<img src="http://pictureposter.audiworld.com/66084/sdscn8308.jpg.jpg">

I couldn't find a place to buy the 2X2 connectors for less than $40 or so, which just seemed like a ripoff, so I made some out of scrap sheet metal, a few bits of scrap plastic, hot glue, and solder, with a fair bit of dremeling involved. In retrospect it would be much easier to just hardwire in another connector (like an RJ-11 jack) instead.

Parts cost for the whole thing is probably less than ten bucks, but it's labor intensive.

|skolnick

<img src="http://www.gabrielcaldwell.com/pix/Audi/VAG-COM/2x2.gif">

<img src="http://www.gabrielcaldwell.com/pix/Audi/VAG-COM/DLC_Pinout.gif">

<img src="http://www.gabrielcaldwell.com/pix/Audi/VAG-COM/96_cav.jpg">

Good place is that little useless dent by the diff lock switch.

kday

And I have other plans for that useless dent, which I'll elaborate sometime over the winter when I get it done.

I do think I'll probably add an RJ-11 jack somewhere in the cockpit though.

|skolnick

expensive? try free from your local junkyard... I ripped that one from a '96 cavalier