# I am not the smartest

**URL:** <https://forum.core-electronics.com.au/t/i-am-not-the-smartest/6466>\
**Category:** Uncategorized\
**Created:** [24 September 2019 02:47 UTC](https://forum.core-electronics.com.au/t/i-am-not-the-smartest/6466 "2019-09-24T02:47:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Damien30648](https://avatars.discourse-cdn.com/v4/letter/d/b4bc9f/32.png) [@Damien30648](https://forum.core-electronics.com.au/u/Damien30648)\
**Post date:** [24 September 2019 02:47 UTC](https://forum.core-electronics.com.au/t/i-am-not-the-smartest/6466/1 "2019-09-24T02:47:18Z")

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I have a simple circuit I want to make.

I have a simple red/blue combination LED (\>1cmx1.5x.5). 3 wires come from the unit.

I attach a 3v switched AAA battery holder to the wires, it either lights red, blue, or not at all.

I want to solder a circuit where a single switch swaps between either colour. I want to use either that battery holder or find a button cell holder. But that’s beside the question.

What kind of switch should I be asking for, and would our humble host have anything to suit.

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**Author:** ![Gordon](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/gordon/32/2970_2.png) [@Gordon](https://forum.core-electronics.com.au/u/Gordon)\
**Post date:** [24 September 2019 06:57 UTC](https://forum.core-electronics.com.au/t/i-am-not-the-smartest/6466/2 "2019-09-24T06:57:57Z")

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Hey @Damien30648,

I would suggest using a SPDT Switch you can find a wiring diagram below. Connecting your circuit from here should be simple.

![image](https://canada1.discourse-cdn.com/flex028/uploads/core_electronics/original/2X/3/30398ffaf28f29e778018490b32864183caafa6b.png)