# Seeking help on wiring (E-Switch RP308) push button

**URL:** <https://forum.digikey.com/t/seeking-help-on-wiring-e-switch-rp308-push-button/66315>\
**Category:** Switches\
**Tags:** pushbutton-switches, cross-reference\
**Created:** [March 9, 2026, 6:09am UTC](https://forum.digikey.com/t/seeking-help-on-wiring-e-switch-rp308-push-button/66315 "2026-03-09T06:09:33Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kford118](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/kford118/32/68204_2.png) [@kford118](https://forum.digikey.com/u/kford118)\
**Post date:** [March 9, 2026, 6:09am UTC](https://forum.digikey.com/t/seeking-help-on-wiring-e-switch-rp308-push-button/66315/1 "2026-03-09T06:09:33Z")

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How’s it going. I’m replacing the power switch on my bench grinder and I’m hung up on wiring the new replacement switch I purchased. Part#: ([RP3508BBLKREDREDNS](https://www.digikey.com/en/products/detail/e-switch/RP3508BBLKREDREDNS/379007)) illuminated SPST On-Off 4 Terminal. The original switch I’m replacing was an illuminated 3 terminal, I would like the new switch to illuminate when switched on. Thank you to everyone in advance for the assistance!

 ![IMG_7846](https://global.discourse-cdn.com/digikey/original/3X/d/d/dd479986521f0d9b27d91e1133978cce7f3727dd.jpeg)

 ![IMG_7847](https://global.discourse-cdn.com/digikey/original/3X/9/7/9738129f262dfd6299a3cdccc9371087c673bcb3.jpeg)

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**Author:** ![Troy\_2808](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/troy_2808/32/132_2.png) [@Troy\_2808](https://forum.digikey.com/u/Troy_2808)\
**Post date:** [March 9, 2026, 4:29pm UTC](https://forum.digikey.com/t/seeking-help-on-wiring-e-switch-rp308-push-button/66315/2 "2026-03-09T16:29:49Z")

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Hello @kford118

The LED voltage is 1.8VDC and I assume your bench grinder is 120VAC. This would mean it is not suitable to run the LED directly off of the same power.

You could consider using for instance a Solid State Relay that is controlled by the 120VAC to switch a low voltage DC circuit to control the LED.

It may be best to also consider a different push button with a light that runs off of 120VAC. My initial search did not locate such a switch in stock. ([Click Here)](https://www.digikey.com/en/products/filter/pushbutton-switches/199?s=N4IgjCBcoGw1oDGUBmBDANgZwKYBoQB7KAbRACYAGMGMAThAPIBYB2VlxiugZlZ4gBdAgAcALlBABlMQCcAlgDsA5iAC%2BBMD0oIQySOmz4ipEM0pwLXczACsreAXO26MVtYu0eIYSHGSZBRV1TQAOb2g9VExcAmJIMnNQymofUQlIaTklVQ0KHltdfUNYkwSQHlCqGHI0vwysoNyCW05I4pjjeLIHOjBagl6YbwJw8jp3X39MwJyQkFZwouijONMebUpmUK4NlOYGAjhQ2gGKzdsdAj3KWwgWylZbc12Ls8unngYphtngvPooQY7RWpW6IB0gjU0KAA) Unless you are able to accept different hole cutout sizes. With more options to consider ([Click Here](https://www.digikey.com/en/products/filter/pushbutton-switches/199?s=N4IgjCBcpgzADFUBjKAzAhgGwM4FMAaEAeygG0QAWeAVgE4A2AdhCOoZqYdavgYb49Y1GvABMQ6pQAcdEAF0iABwAuUEAGUVAJwCWAOwDmIAL5EaYykhCpImXIRLkQTWtLBWiTWA1hiWRGJ08NQQRMyUsDQ8XMGIXgyMsDzSfnQBIKkIyUTSNLCwLIogqupaekamRGB0sta29vhEpJAUiPJmIAC0EtA2UDoAro4tFNEdRF1yfbZDI84QHSYmQA)) when looking at different sizes.

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<div class="post-metadata">

**Author:** ![kford118](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/kford118/32/68204_2.png) [@kford118](https://forum.digikey.com/u/kford118)\
**Post date:** [March 9, 2026, 5:29pm UTC](https://forum.digikey.com/t/seeking-help-on-wiring-e-switch-rp308-push-button/66315/3 "2026-03-09T17:29:03Z")

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Troy, Thank you for pointing that out for me. I found an illuminated toggle switch by Carling Tech LT-1511-610-120. It offers a 125v neon and 3 terminals.