Model ETHIMP0 Headlight Flasher By: Sound Off We like to call this our “Plug & Play” headlight flasher. On the new Impala police package vehicles, all you do is unplug and insert this flasher in line with the existing headlight wiring harness. Just add an on-off switch and you’re done! Easy To Install. We have them for taillights too! Model ETHIMP0 Headlight...Only $69.99 Model ETFBIMP0 Tail Flash Only $84.99