I used to install these myself (on my work trucks, etc.), but with the Jag I opted to have a stereo crew do the install. They did a nice clean set up with the control box, speaker, and switch on the left side of the dash above the little drawer that opens up. They only charged me $60 for the install work! I bought the unit on eBay for $595. It's worth every penny, especially since I haven't gotten a laser ticket in 15 years. In Tucson that is now nearly the exclusive way for the police to measure speed... laser shot from a motorcycle hidden behind an obstruction. Other drivers slam on their brakes when they see the policeman, making it quite dangerous.
This is a link to the unit that I have in my car: HP-905 Compact Dual Sensor Laser Jammer by Blinder Xtreme | Blinder Xtreme- Official Home Page
I've learned over the years that you only need more than 2 heads if you install onto the front of a huge truck. I've never used the units facing rearward. Before this unit came out, I used to drive with my high beams on during the daytime, helping to prevent police laser from 'burning through' the UV blast. This new unit makes that unnecessary.