Safe to Splice/Tap Stereo Ignition?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=146534
Printed Date: May 07, 2025 at 9:07 PM

Topic: Safe to Splice/Tap Stereo Ignition?

Posted By: xxdarklgxx
Subject: Safe to Splice/Tap Stereo Ignition?
Date Posted: November 03, 2020 at 4:59 AM

So I was planing on getting one of those 12v to 5v USB to have another usb for running accessories (this case a streaming stick for running media to back display ). I was thinking to splice/tap the outlet socket but couldn’t I just be able to use the red ignition/accessory wire from stereo as the tap or would that cause any problems with the usb /stereo?
Vehicle :trax 2016
Stereo: ilx 207 wired via harness

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Lg

Replies:

Posted By: geepherder
Date Posted: November 03, 2020 at 5:16 PM

I don't think you have an accessory wire at the stereo. It's most likely handled by the CAN bus.

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My ex once told me I have a perfect face for radio.

Posted By: i am an idiot
Date Posted: November 03, 2020 at 7:43 PM

Which harness did you use to do the radio install?

Posted By: xxdarklgxx
Date Posted: November 04, 2020 at 9:17 AM

@geepherder sorry I meant the red wire normally used in stereo install (the ignition/acc one) since its 12v technically ?
@i am an idiot I used the iDatalink HRN-RR-GM2 Interface Harness to maintain all the stock controls and such .

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Lg

Posted By: i am an idiot
Date Posted: November 04, 2020 at 6:29 PM

The Maestro RR has 15 amps of current capacity on the acc wire output. I did not check on the RR2. But I see no reason it would be less. So yes, you can use that wire to power your usb adapter.

Posted By: xxdarklgxx
Date Posted: November 05, 2020 at 3:33 PM

Thanks for your replies guys ?
! So something like this should be fine : posted_image

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Lg

Posted By: geepherder
Date Posted: November 06, 2020 at 6:07 AM

That should be fine.

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My ex once told me I have a perfect face for radio.

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