# Polarity of V3 cable

**URL:** <https://forums.wyze.com/t/polarity-of-v3-cable/293468>\
**Category:** Cameras\
**Tags:** cam-v3\
**Created:** [March 16, 2024, 10:36pm UTC](https://forums.wyze.com/t/polarity-of-v3-cable/293468 "2024-03-16T22:36:39Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![evanjcorcoran](https://avatars.discourse-cdn.com/v4/letter/e/2acd7d/32.png) [@evanjcorcoran](https://forums.wyze.com/u/evanjcorcoran)\
**Post date:** [March 16, 2024, 10:36pm UTC](https://forums.wyze.com/t/polarity-of-v3-cable/293468/1 "2024-03-16T22:36:39Z")

</div>

Hello.

I am using 2x 12v to 5v converters to power 4 V3 cameras. Each converter rated at 3amps, I figured would be plenty available power for 4 cams.

My 5v micro usb to camera runs will utilize the stock 6 foot cord, and I have discovered that the internal wires of the wyze micro usb power cables are both the same color, white… so what do I do?

Could anyone tell me how to test polarity of the micro usb cable before I try to plug it into the camera? I would hate to damage some brand new cameras.

Thanks.

---

<div class="post-metadata">

**Author:** ![bryonhu](https://sea2.discourse-cdn.com/wyze/user_avatar/forums.wyze.com/bryonhu/32/122736_2.png) [@bryonhu](https://forums.wyze.com/u/bryonhu)\
**Post date:** [March 17, 2024, 1:29am UTC](https://forums.wyze.com/t/polarity-of-v3-cable/293468/2 "2024-03-17T01:29:41Z")

</div>

Uses the standard micro-USB pin out 1 = Vcc 5v and 5 is ground.

Any micro-USB adapter will have correct pin out.

I use something like the link below, would reference what I use but it’s currently unavailable on Amazon.

PlusRoc Waterproof 12V/24V to 5V Converter DC-DC Step Down Module Power Adapter Compatible with Ring Keypad, Cellphone, Car (Micro USB Connector) [https://a.co/d/e5YOPe5](https://a.co/d/e5YOPe5)

---

<div class="post-metadata">

**Author:** ![K6CCC](https://sea2.discourse-cdn.com/wyze/user_avatar/forums.wyze.com/k6ccc/32/1591_2.png) [@K6CCC](https://forums.wyze.com/u/K6CCC)\
**Post date:** [March 17, 2024, 4:48am UTC](https://forums.wyze.com/t/polarity-of-v3-cable/293468/3 "2024-03-17T04:48:49Z")

</div>

I take it you are planning on hard wiring into the cable and NOT using the original USB-A connector. Simple way to confirm the wires is to power the cable from a standard USB-A power source. Strip a little insulation off wires and measure the voltage on the wires with a DVM.

---

<div class="post-metadata">

**Author:** ![system](https://sea2.discourse-cdn.com/wyze/user_avatar/forums.wyze.com/system/32/1_2.png) [@system](https://forums.wyze.com/u/system)\
**Post date:** [June 15, 2024, 4:49am UTC](https://forums.wyze.com/t/polarity-of-v3-cable/293468/4 "2024-06-15T04:49:28Z")

</div>

Closed on June 15, 2024, 4:49am UTC

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.