Vehicle Speed Sensor & Injector Signal

[Zilla]

I found this site that uses Arduino, a opensource programming system that allows you to make endless little gadgets and program them to your liking.  This guy is selling a MPG kit which slightly modified can look really good in the car.

I was wondering where I can find the wires that can show you the vehicle speed, and the injector signal.  Here is the link to the gadget if anyone else is interested..

E

http://spiffie.org/kits/mpguino/start.shtml