battery

Hey everyone, got a bit of an issue I was hoping someone could help with. Twice now, I've come out to my Speed3 to find that it won't start. I check the battery voltage, and it's usually hovering within the 10v-11.2v range. This always happens when I let the car sit for more than two days...

Hey everyone, Brand spankin new to this forum. I need some advice on connecting my iphone 3G to my mazda3 2006. Here is what I am hoping to go with if I hear that it is in fact compatible (many forums say it is). THE R2 kit as I have to plug it behind the SAT compartment on the HU...