[MAG]

Agree with Dave-in Minn. The current draw of a AC is almost constant load of 25/30 amps depending on the AC clutch cycling. That continuous load will cause the 30 amp meter to get hot because it is at the top of the load rating. On a cross-country road trip one of our cars, AC equipped, burned the amp meter up. Mine got very hot to the touch. I made a temporary shunt using 6 foot #16 wire wrapped around a 3/8 dowel approx. 3" long. It works well. First start of the engine the amp meter indicates about 5 amps charge very briefly.

Am experimenting to create a shunt that will indicate a charge of about 10/15 amps with full AC and Headlights load. If you have already done this please message me.