Rocker switches

[TheQ]

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.

[cavie]

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.

[TheQ]

Cavie, OK I understand the 12V, 3 terminals but not the last part. Can you clarify? Thx.

[16ACE27]

Simple on/off 2 terminal 12 VDC switches with a ground for the LED light.

[gmc]

Originally Posted by TheQ

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 isn’t present, would need to run one... but assuming your switches are part of the control panel, I’m sure there is a negative/ground wire you can use.

[cavie]

Originally Posted by TheQ

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.