I purchased a used car with an Alpine Mobile Security System 8070 in it. The car came with one key fob/remote controller that doesn't appear to be Alpine and that's in tough shape. The fob says on it "Auto Watch." I need to figure out how to get another key fob that will work with my system... or I suppose I need to replace the whole thing. I am a complete novice when it comes to this stuff. Any recommendations? Is the 8070 system any good?