The Snakes Alive CMP Wiring Project

[Hanno Spoelstra]

Originally Posted by Jacques Reed

It appears there are two types of Ford ammeters used on the Ford CMPs then.
I took my information from the original harness after tracing out the wires. That round gauge ammeter has two terminals and is wired in series to the voltage regulator from the battery.

Second photo is the back of a NOS Ford Ammeter also with two terminals. The lower left gauge. The face of it is shown in a previous post and has the same face as the one you show.

Added a 1941-42 Truck wiring diagram showing the ammeter in series.

Here’s a photo of my spare instrument cluster. It has an Ampere meter but it is wired separately from the oil pressure meter - there is no bridge.

Now I need to study the various wiring diagrams to see if it can be wired in in my 1943 F15A which has the BATT meter (last photo).

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