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Old 08-23-2019, 01:30 AM   #1
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Rocker switches

I want to change out the rocker switches for both tank warmers, etc with lighted switches so I can tell when they are on.

What are the specs on the switch, 12V, 24V, ??? I think I need ones with 3 terminals but not sure. TIA.
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Old 08-23-2019, 01:43 AM   #2
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12 volt 3 terminals but you need the wiring for 3 terminals. If it is a hot coming down and a switch leg going up, it will not light up.
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Old 08-23-2019, 01:47 AM   #3
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Cavie, OK I understand the 12V, 3 terminals but not the last part. Can you clarify? Thx.
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Old 08-23-2019, 01:48 AM   #4
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Simple on/off 2 terminal 12 VDC switches with a ground for the LED light.
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Old 08-23-2019, 01:54 AM   #5
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Originally Posted by TheQ View Post
Cavie, OK I understand the 12V, 3 terminals but not the last part. Can you clarify? Thx.
An unlighted switch is just 2 wires in this application (SPST). Positive wire coming in, and wire going to heating pad.
A lighted switch needs 3 wires - adding a negative/ground to complete the circuit for LED...
If a negative wire isnít present, would need to run one... but assuming your switches are part of the control panel, Iím sure there is a negative/ground wire you can use.
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Old 08-23-2019, 02:07 AM   #6
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Cavie, OK I understand the 12V, 3 terminals but not the last part. Can you clarify? Thx.
2 wires 1 hot coming down to the switch. , 1 switch leg going back to the light. no ground. you need a ground to light a switch.
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