08-06-19, 01:20 PM
You should be getting 0V or very near 0V across any switch when it's closed no matter whether it's on a positive wire or a ground wire.
When you measure Voltage you're measuring the difference between the two points. If you put the two probes into the switch connector and put the meter on DC voltage you should see 0V or very near 0V with the switch closed. Think about what a switch is. It's just like a break in a wire. When it's closed it's as if there is no break so it's just one continuous wire so there should be no difference along a continuous wire as long as there's no unwanted resistance in the wire or in the switch, so the meter should show 0V when the switch is closed.
The switch is just providing a path to ground when it's closed. Ground is just the negative side of the battery. There's nothing fancy about it. You should see no voltage across it when it's closed unless you connect the red lead of the meter to a point that's at a higher Voltage, like the battery+, and put the black lead into the switched ground(black/blue wire), then you should see 12V when the switch is closed.
What I'd do is make sure you're on the correct connector. Then do the continuity test. The meter should beep with the stand up and not beep with it down.
When you measure Voltage you're measuring the difference between the two points. If you put the two probes into the switch connector and put the meter on DC voltage you should see 0V or very near 0V with the switch closed. Think about what a switch is. It's just like a break in a wire. When it's closed it's as if there is no break so it's just one continuous wire so there should be no difference along a continuous wire as long as there's no unwanted resistance in the wire or in the switch, so the meter should show 0V when the switch is closed.
The switch is just providing a path to ground when it's closed. Ground is just the negative side of the battery. There's nothing fancy about it. You should see no voltage across it when it's closed unless you connect the red lead of the meter to a point that's at a higher Voltage, like the battery+, and put the black lead into the switched ground(black/blue wire), then you should see 12V when the switch is closed.
What I'd do is make sure you're on the correct connector. Then do the continuity test. The meter should beep with the stand up and not beep with it down.