Willing to look stupid to save one wire...

[DrMikeG]

I appreciate this is a really remedial question - and I thank you for your patience.

I have a teensy 4.0 which I am just wiring up an on/off switch for. (Yep, long press connects on/off to gnd to turn off, short press connects on/off to gnd to turn back on).

The momentary switch I am using also contains an LED indicator light, and an internal resistor (I don't know the resistance or forward drop).

So, the switch has 4 lugs
2 for the LED which connect to 3.3v and GND.
2 for the button which connect to On/Off and GND.

You can probably guess my question.

Can I get away with just three wires if I bridge the LED- and the GND lug of the switch?
Or does this end up applying LED voltage to the ON/OFF pin when the switch is connected?

Now the I've typed that out - it sounds like a bad plan - but it would simplify the wiring to only use the end pins of the board.

Many thanks

[MarkT]

Should be fine. An LED + resistor is a load, not a short circuit, so it won't overcome ground which will be 0V
whatever. I'd double check there's no internal connections with a multimeter though - its always worth checking
pin-outs for things like switches just to be sure.

[DrMikeG]

Thank you very much for the prompt advice @MarkT