If your whip is a Honda, Toyota, BMW, Chrysler, VW, or Mini made in the last decade or so, the Car Kracker is for you. This project allows you to connect directly to your car’s computer system, allowing you to display messages on your stereo, play music off an SD card, and even override factory settings like always-on daytime running lights.

The Car Kracker uses ISO 9141, an in-car communications protocol that is now mostly used in foreign (for the US) cars. The build uses a Gadget Gangster Propeller board to connect to the CD changer port and OBD-2 port in the trunk, and the diagnostic port located under the hood.

With the Car Kracker, it’s easy to connect the Aux In on your stereo to an SD card loaded with music, or even plug in an iPod for the poor souls without a 1/8″ jack. Dealer customizations such as turning the ‘door is ajar’ noise off, toggling daytime running lights, and throwing a nav warning up are also possible.

Check out the two videos after the break, and if anyone has any more info on getting this deep into a car’s computer system (a wiki, maybe?), send a link in on the tip line.

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