Don't need this anymore. This is a OBD2 to serial port cable as sold by AKM. I used it on my 95 Trans Am with LT1 edit. This is an early style cable that still has the cigarette lighter plug in. Not sure what it was used for, as when I bought it Andrew told me I didn't need it. This cable is in mint shape. New they are $90 plus shipping, I am looking to get $70 shipped.