A New Radio Truck 2k1

[ahleeds]

This truck followed me home from Jim Harrisons .. It looked pretty standard , but it would appear to be a wireless truck that would have carried a 2k1 body on the back.
there is ground straps all over the place and aluminum sheided wires running up the frame.
Also has the speaking tube cuttout behind the drivers head.
Questions

What was wired in the left cab half way up with two wires? Look for red circle in the last picture.

Is there any spare 2k1 body parts around ( I did talk to Gord Falk about his left over peices) ?
Does anyone know what the markings could tell us about the truck ? (thats a 45 on the front).

Later
Anthony