Severe voltmeter needle oscillations
This sort of illustrates what I am referring to. Imagine the open end points are where the battery is. The "V" is your meter with leads across the fuse box in parallel with other loads. The "switch" represents your turn signal. Once that switch/signal is closed, there is zero load across the v-meter leads and so zero voltage drop (difference of potential) and no reading.
This sort of illustrates what I am referring to. Imagine the open end points are where the battery is. The "V" is your meter with leads across the fuse box in parallel with other loads. The "switch" represents your turn signal. Once that switch/signal is closed, there is zero load across the v-meter leads and so zero voltage drop (difference of potential) and no reading.