Interesting Robert, but the KR scanner happens to stand out against the Trans Am's pop-up headlights
But I do have to say, anyone purchasing a KR scanner in the name of using it for a Emergancy light, has to be insane. The scanner, when using 55 watt halogen bulbs (which have been known to melt the red lenses) are horrid against the car's electrical system. You can't go very long without some sort of recharge before th lights will ultimately drain the battery for everything its got.
But now you have to think Robert, some departments don't like the idea of having to cut and splice the vehicle's wiring harness just to put in a control board and 2 relays (that's for all cars other than the Ford Police Interceptor which has plug and play capabilites). This is because it lowers the value of the car and not only that, if done incorrectly, water can seep in and damage the wiring.
For the Interceptor, they have slots under the dash for headlight and taillight wig-wag controllers. All others are cut and splice.