The SparkFun CAB-10087 is a cable that will allow you to access the pins on your car's OBDII connector.
It has an OBDII connector on one end and a DB9 female serial connector on the other. The overall length of the cable is 5'.
Note: This cable is not meant to be plugged directly into a computer's serial port. It is meant to plug into some sort of hardware interface.
Here is the basic pinout (OBDII > DB9 Female)
|CAN High J-2284||6||3|
|ISO 9141-2 K Line||7||4|
|CAN Low J-2284||14||5|
|ISO 9141-2 L Line||15||8|
Notice for California Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov