Very nice.
I'll take a guess on the first one.....there's an antenna "junction box" that CHP uses between the radio and scanner antenna. Geoff Fors sent me a bunch of information on them awhile back, but they were supposedly home-made, using off-the-shelf parts, and still in-service (not yet surplused, like the RANGR stuff). Maybe it has something to do with those?
My '82 still has a decal with a picture of the box in the trunk.