New Security System

I recommend you to have a professional install it.

If you have to ask, get a certified installer to do it. Especially on cars like Fords and Toyotas that have the stock passive(I think that's the term) alarm system.

I work at Bestbuy, and if you buy an alarm the install is free anyways.

I have the Matrix RSX and it works great. The company(Clifford) was pretty much handing them to us, so I got one just to check it out. Even got the remote start, although it's pointless here in FL. The remote is awesome. It's so nice knowing whether or not you locked your doors(it's so habitual I always doubt myself), and being paged when someone bumps your car.

Welcome to the boards.