Review on Dmyond Digital Display Voltmeter Multimeter Measuring & Layout Tools by Leo Torres

It took some time to figure out the connections for this meter. Small red/black wires from 3-pin connector = +/- to meter power supply. (4-28 VDC) Yellow from the small 3 pin connector is the measurement input (connect to whatever voltage you want to measure which can be the same as the RED meter input or up to 100 VDC) Big RED / The BLACK wires on the 2-pin connector is used to measure the current. Black wire on the underside of the load voltage supply (GND) of the load. The red wire goes to the low side of the load. The internal current shunt is now on the low side of the load.