"John, first, I want to thank you for your advice and assistance. The install of the Beltronics STi-R Plus went well and the advice you gave me when I ran into problems fixed the issue. Second, It WORKS. In the short period of time that my system has been up and running, it has saved the day twice. With the fast driving awards we have in my state it has more than paid for itself in fines alone. Not counting the hassle that I would have gone through. Again, Thank You for your advice and a product that works".