The shunt across the Ammeter is just a parallel circuit. Big current in the shunt, and small across the meter. Works like a champ. I never thought you could "read" the current on the meter, just "charge"(good) and "discharge"(bad). If you wanted a good read(in Amps) you used a big lead tester. 35 Amps will heat up 12 gauge wire, and 100 Amps runs my home. Stainless hose clamp..won't rust(and become a Resistor). Heat shrink will keep most stuff from shorting so that is good. Not a bad way to go if you must use a big current system. Use a Volt meter to keep track of the system overall.
