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Build a Ski Helmet walkie-talkie ("ACS")

Step 2Reverse earpiece and microphone connections, add talk switch connection

Reverse earpiece and microphone connections, add talk switch connection
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Most walkie-talkies use the opposite "polarity" on their connector to other headsets. So converting any phone/xbox/cell headset to walkie-talkies, usually requires popping it open and swapping the mic and headset wires.

Test it first! You may not have to swap the wires if you have weird walkie-talkies or a funky headset.

Use an ohmmeter to find the mic, earphone, and common wires. Leave the common wire alone.

Pics show before and after. Note the white and red wires have been swapped.

OOPS, I FORGOT A PIC!
The simple swap is enough for voice-activated use, but on the mountain, the wind noise is too strong, and you need to use push-to-talk.

The pic I forgot to show... was of me adding the wires for the push-to-talk switch.

You want to put a hole in the headset (there's already one there on the xbox headset) and feed in 2 wires for the switch. Remember to tie a knot for strain relief, or they could rip right out and destroy all your work.

Now, don't connect the microphone to the pad where you were going to swap it to. Instead, connect it to one of the wires going out of the headset. Connect the other wire to the pad. You have put the switch wires in series with the microphone.
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