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It is unclear how many screws are on the switch you are testing.
If your switch does not show ohms when the switch is in one position, then it sounds like the switch is bad. But you can read information below for more information about your testing.
You can also add a comment and continue the discussion.
Let me provide more information about switches because you seem interested in electricity and the information may help us understand where the other is coming from in case you add a comment needing more help:2 screws on switch
: (excluding ground screw)
An ordinary single-pole switch usually has 2 brass colored screws.
These screws only read ohms or continuity when switch is in one position.
When the switch is in the other position, there are no ohms that pass through the switch.3 screws on switch
: (excluding ground)
A 3-way switch has 3 screws. There are 2 brass-colored screws and one dark-colored screw.
Put ohm tester on dark screw and continuity will show between the dark screw and one of the brass screws.
Flip the switch and ohms will test between dark colored screw and the other brass screw.4 screws on switch
. (excluding ground)
There are 2 screws on each side of switch.
This type of switch might be a special purpose double-pole switch.
Or it might be the more common 4-way switch.
Add a comment if you have a switch with 4 screws.
Below is a typical 3-way switch application showing the dark-colored screws:
Here is a typical 4-way switch circuit:
Notice the switch in middle has 4 screws:
Link below goes to a special application double-pole-double-throw switch:http://waterheatertimer.org/images/30-Amp-DPDT-switch-a-800.jpg