# RV50X Powering issue, Can't power it up

**URL:** <https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043>\
**Category:** AirLink Routers\
**Created:** [October 3, 2018, 2:43pm UTC](https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043 "2018-10-03T14:43:09Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Ali\_khan123](https://avatars.discourse-cdn.com/v4/letter/a/ea666f/32.png) [@Ali\_khan123](https://forum.sierrawireless.com/u/Ali_khan123)\
**Post date:** [October 3, 2018, 2:43pm UTC](https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043/1 "2018-10-03T14:43:09Z")

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Hello,

I am having issue in powering up RV50X GSM Modem. I am doing the same connections as they are given in the data sheet.

Fixed Installation:

Pin 1 red = + of the battery

Pin 2 black = ground ( -ve of the battery)

Pin 3 ignition = + of the battery

Pin 4 GPIO = ground( -ve of the battery)

When I make a connection, Power led doesn’t turn on.and I also measured the voltage on the GSM modem power cable it is 24Vdc. So my input is according to the data sheet between 7Vdc to 36Vdc.

I have tried calling sierra yesterday whole day for technical help, but no response. I have 3 GSM Modems and all have the same issue. Can I get a help on this issue.

Any response will be appreciated.  
Thank you

Ali

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**Author:** ![pek](https://avatars.discourse-cdn.com/v4/letter/p/df705f/32.png) [@pek](https://forum.sierrawireless.com/u/pek)\
**Post date:** [October 8, 2018, 7:28pm UTC](https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043/2 "2018-10-08T19:28:40Z")

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If you are using the DC power cable that came with the RV50: Red and White wires go to battery positive. Black wire to negative. Do not connect the green wire to the battery; leave it unconnected.

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**Author:** ![jrcurtis](https://avatars.discourse-cdn.com/v4/letter/j/e9a140/32.png) [@jrcurtis](https://forum.sierrawireless.com/u/jrcurtis)\
**Post date:** [January 8, 2019, 8:38pm UTC](https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043/3 "2019-01-08T20:38:06Z")

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Maybe I can hijack this thread a bit. What are the specs on the DC power cable? Specifically what is the wire size (AWG)?

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**Author:** ![pek](https://avatars.discourse-cdn.com/v4/letter/p/df705f/32.png) [@pek](https://forum.sierrawireless.com/u/pek)\
**Post date:** [January 10, 2019, 9:54pm UTC](https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043/4 "2019-01-10T21:54:38Z")

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The outer jacket says 20 AWG, stranded

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**Author:** ![jrcurtis](https://avatars.discourse-cdn.com/v4/letter/j/e9a140/32.png) [@jrcurtis](https://forum.sierrawireless.com/u/jrcurtis)\
**Post date:** [January 16, 2019, 9:34pm UTC](https://forum.sierrawireless.com/t/rv50x-powering-issue-cant-power-it-up/14043/5 "2019-01-16T21:34:21Z")

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Follow-up question: am I right to assume this is a micro-fit molex connection socket on the RV50? Here’s an example of a compatible plug: [https://www.molex.com/molex/products/datasheet.jsp?part=active/0430250400\_CRIMP\_HOUSINGS.xml](https://www.molex.com/molex/products/datasheet.jsp?part=active/0430250400_CRIMP_HOUSINGS.xml)  
Would this work if implemented on a harness design? I may rather integrate the connection in my own harness than utilize the included cable.