CMP's and attaching trailers......

[Bob Carriere]

....that early CMPs had a single wire connection directly behind the tow hook partly shielded by a small piece of sheet metal....... the female connector would have been very similar to the trouble light socket installed in the dash of cab 11/12...... not enough wires to see where or how connected to the main wiring loom....but easy enough to approximate.

Grant may remember our findings such remains on old rolling chassis..... it may have only been used for brakes or for convoy lights????

Never seen any printed information.