My truck has a 63 amp alternator and I installed a second shunt, as suggested by HotRod Lincoln to prevent a fire caused by a faulty ammeter. Fabricated from a SS hose clamp, bridging the positive and negative terminals. It does show charge/discharge but not the actual value.
In the process of doing the bodywork/paint, I reduced the size of the center section of the shunt from 1/2” to about 1/4” (no photo) hoping it will show more of a swing. I’m not looking for actual value, but more of an indicator of the health of the charging system.
We’ll see when I fire her back up in May.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum