I'm finally getting back to this project after finishing up my
last arduino project. I've made a few tweaks to the circuit diagram with saand's help (which I don't have with me ATM), but I'll post it up soon as well as pictures of the rest of the progress. I have most of the circuit laid out on a board. For the most part, I just need to add jumpers to attach to the arduino, and then wire it up to the car. I'm sure it'll need some tweaking to work correctly, but hopfully thats not too far off.