First, you need to disconnect the electrical harness connector for the circuit being tested if necessary, next enable the circuit and/or system being tested, select the V (AC) or V (DC) position on the DMM, then connect the positive lead of the DMM to the point of the circuit to be tested, connect the negative lead of the DMM to a good ground, and the DMM displays the voltage measured at that point.
By BobGM Specialist
01/11/2022