I wish I had some pictures of the Caddies from the first squad I ran with, back in 1977. High-top Miller-Meteors, with Ful-Vues at each corner (high roof in the rear, low in the front), a Power Light in the center of the roof, and a Mars light flanked by two siren speakers on the low roof in the front. From head-on, all lights were visible, so they made quite a show coming at you. (I remember the Mars lights would occasionally get stuck, and we would reach over and whack them with a clipboard to get the moving again.)
A lot like this, but with a Mars light where the Q is. And I don't remember us having Ful-Vues on the front of the raised roof or flashers faired on to the back: