Two ammeters? OK, just wire the new one in series with the old one. To do that, just identify the battery wire from the starter to the existing ammeter. Cut this wire and wire the ends to the new ammeter.

I looked at your post in the gallery and see that you have installed an alternator. I'm not sure what happens to a 30A ammeter if more than 30 amps flows through it. Maybe it just pegs at 30A without damage or maybe it blows like a fuse.

Re the schematic. I agree that the back light and fuse should be wired to the same side of the gauge as the ignition.


Gord 🇨🇦
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1954 1/2 ton 235 4 speed