From a reader:

I stumbled upon these pics when I was looking for Homer’s newer ambulance online.  These currently belong to Homer Glen Emergency Management.  The light wagon I belive was the former C.F.D. light wagon 9-1-6 and the ambulance is a former Northwest Homer rig.

EMA light truck

The Illuminator comes with a 15,000-watt generator, a light rack, and a light tower. It can provide power when wires are down, and turn night into day at any scene. Homer Glen EMA photo

Chicago FD Light Wagon 9-1-6

Squad546 photo

EMA light truck

Homer Glen EMA photo

EMA equipment truck

Homer Glen EMA photo