The Snakes Alive CMP Wiring Project

[Jacques Reed]

Hi Keith,

Thanks again for your help.

Here is a revised cowl wiring diagram based on the diagram and photos you supplied which may be of help to others. It shows the corrected entry of the various ring and fork terminals on the terminal block.

I made the turn signal wires an extra 4" longer than the side light harness wires to avoid wrong connections. Yellow is the colour for the sidelights and for Falk turn signals front left side.

As previously mentioned, the lengths for the side light and headlight wires are correct as per my original sample. The wire lengths for the dip switch harness are my best estimate. If anyone has an original harness for the dip switch I will gladly revise my wire lengths if they are different.

Cheers,

[Jordan Baker]

Just wondering if anyone has some photos showing where the rear harnes goes from the change over switch to the light positions? The harness I got from Vintage Wiring Harness Australia doesn’t seem to make sense

The truck is for a C15a. It shouldn’t make really any difference if it’s cab 11/12 vs 13

[Jacques Reed]

Good Day,

Following on from the "Toggle Switch" thread in the restoration section here is a revised diagram of the later Ford CMP light switch wiring. Revision shows the internal common connections at the input terminals.

Note: This is for the later light switch panel which used specialized TPST switches to control defined groups of lights. Earlier light switch panels operated individual types of lights only and can be operated using SPST switches.

All lengths taken from an original harness. Wire numbers and colour codes as per Ford wiring diagram.

Hope this may be of help to other restorers.

Since posting this I had a look at another light switch assembly and found some interesting differences. At first I thought it had been jury rigged using a SPST switch at the Tail light. Upon close inspection and tracing out the original wires it appears it could be an original setup also. The jumps were factory crimped and when I analyzed it, TPST switches were not required at every location to obtain the lighting combinations. See my comments in "Toggle Switches"

Attached is the original wiring showing the crimped terminals and another wiring diagram using the switches in the photo.

Cheers,