How To: C15a Wire-3 restoration

[Phil Waterman]

Originally Posted by Jordan Baker

....... I realize the original only had one brake but to be safer I’ll go with two.

Hi Jordan

I wholeheartedly agree that good visible brake lights are a necessary safety measure.

While the wiring diagram, in the manual, shows only one "STOP LAMP" two of my trucks 1945 HUP and 1942 Pattern 13 C60S appear to have been wired originally with two brake or stop lamps one each side.

So that rear of the HUP had two of the two light tail light brackets the drives side one has a toggle switch which turns off both tail lights (rear marker) turns on the black out or SUB LAMP which shines on the rear differential. The C60S has the sub lamp on the side of the frame in the form of push switch like the high low headlight switch
The brake light isolation switch is up on the dash.

When doing my first CMP wiring harness it was for my HUP which fortunately was very complete to copy, using the wiring diagram for the size and wire markings.

Cheers Phil