What's that extra blade for ? The continuity switches blades depending on if the switch is open or closed. The switches are for reverse lights and the other is for neutral safety switch, which normally just have a 2 blade setup. Could the other blade be for turning a constant power off or something ?
You can use either power or ground signal, One terminal is ""main"" source ground - or power + , (voltage) The other two terminals make it either ""open circuit" or ""close circuit "" For the Leaver / switch
You have a 'common' terminal, a normally open terminal and a normally closed terminal. That is a SPDT (single pole, double throw) switch. If that were a Bosche relay, the common would be terminal 30, the NO would be 87, and the NC would be 87A.
In the switch above, you should see markings as (on each terminal, from top to bottom) NO - Normally Open NC - Normally Closed C - Common Just like any other single pole, double throw switch
These PW switches that look like crank up windows, use two of those switches to reverse the power on the window motor. Red connects to the inside blades, Ground to the ones next to it and the motor wires to the blades on the sides. When the crank is turned 15 degrees it triggers one micro switch to power up the motor and the other switch is grounding. BTW, if you purchase these PW switches, take them apart and install higher quality micro switches immediately, or wait a month and do it when they fail to work.
I can leave the one side open without issues correct ? The common is the one on the side, the bottom right let's continuity through in the closed switch position which is what I need, so I have no use for bottom left since there's only 2 wires to hook up.
If you are ever after some of these switches they are used in many applications like clothes dryers and microwaves (door switches), older washing machines (on the main electric motor), etc. The same profile switch has been used in lots of things for many years, so they all mount and work the same.
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