Vehicle Window LED Strobe Light
You could mount two of these in your back windshield. The possibilities are endless. Just be careful not to get in trouble :)
It isn't as bright as a real cop strobe, but it still gives a nice effect, for about 1/10th of the cost.
Press the red button to turn it on, and cycle through the flash modes.
Jordan Moddes from Kenosha, WI
This is SUPER cool. its extremely bright from dusk to dawn and it COULD get you in a LOTTA trouble if not used properly. Already was questioned by officers. O.o
but to make a 'real' squad car look, 2 are needed and placed right next to each other. turn them on together and there you go. real looking police car. :)
really easy to install and all the wiring is simple too. :)