testing voltage drop

[Lschevy 3]

Is there a way that i can test voltage drop with a digital multimeter

[ssh 924]

Hook up the dmm to what your measuring.

Write down voltage with car off.

Write down voltage with car off and stereo at full tilt.

write down voltage with car idling.

Write down voltage with car idling and stereo at full tilt.

Compare voltage differences.