clarion screen relay needed?

Printed From: the12volt.com
Forum Name: Mobile Video, GPS, and Navigation
Forum Discription: Mobile Video Head Units, DVD Players, LCD and TFT Monitors, Navigation, GPS, PS2, PS3, XBox, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=122990
Printed Date: May 14, 2025 at 5:11 AM

Topic: clarion screen relay needed?

Posted By: bodis22
Subject: clarion screen relay needed?
Date Posted: August 05, 2010 at 7:27 PM

I have a 2008 tahoe and have installed a Clarion VX400 double din screen. I used the PAC OS4 wiring harness and the head unit cuts off and then back on. I have been told by a stereo shop that I need to install a relay on the Main Power and the ACC power. It may be resetting the OS4 due to low voltage output. I have never dealt with relays, but have installed many systems. Any help is appreciated.

Replies:

Posted By: i am an idiot
Date Posted: August 05, 2010 at 8:28 PM

Connect the radio's Yellow wire to the vehicle's constant wire before the OS-4

Posted By: bodis22
Date Posted: August 05, 2010 at 8:32 PM

no need for the relay then, by the way...thanks

Posted By: i am an idiot
Date Posted: August 05, 2010 at 9:06 PM

Correct, there is no need for a relay. The OS-4 does not allow enough current through the unit to power most Radio/Monitor units. The unit works fine if powering a standard deck. The display pulls considerably more current.

Posted By: bodis22
Date Posted: August 05, 2010 at 9:13 PM

Thank you, I will give it a try. The OS-3 shows this in the instructions, but not the OS-4...go figure.

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