Amp gauge shunt

bbab3 said
View attachment 1715269537 Since I have the flu and have a need to keep myself busy I thought I would elaborate with some crude drawings to better explanation my ideas. The first one "plan a" shows the brass shunts like was used on my Power Wagon plus two insulated terminals to clean things up and eliminate the welded splice.
View attachment 1715269541
"Plan b" above shows the use of an external shunt like Stewart Warners uses with their amp gauges that are rated to 100 and 300amps.

Also here's the link that made me consider keeping the amp guage in my ralley dash.
Bullet-Proof Your Ammeter (A 'How To') - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
This shows how to improve the conductivity of the guage.

Hope this helps.

Did you ever get your ammeter idea worked out using a shunt across the terminal on back of the gauge ? I have a 62 plymouth, and have installed a 78amp mopar sqquare back alternator. I would like to do something like what you talked about (bridging the posts of the gauge) Can you tell me more about what you did. I don't have a truck ammetter to get shunts from, but thought I could make something..any help would be great.