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headrest monitor acting weird?

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=127422
Printed Date: May 06, 2025 at 9:10 AM


Topic: headrest monitor acting weird?

Posted By: dcu1976
Subject: headrest monitor acting weird?
Date Posted: May 22, 2011 at 1:05 PM

This relates to a 1997 Mercury Grand Marquis, I have a Pioneer AVIC-900BT for my main Navigation/Media player(everything works perfect). Yesterday I decided to install a headrest monitor for my kids, its a Roadview RHM 7.0G. After installng it, I noticed weird things happening, first, the headrest Monitor would not power up unless I had the RCA composites connected(red,white,yellow). Everytime I disconnected the rcas the monitor would shut off(no power). Additionly while trying to resolve this issue on the headrest monitor, apparently, my youngest daughter somehow yanked out the ground connection(-) to the headrest monitor, and yet the Monitor still powered on until I disconnected the RCAs(WEIRD), the only thing I can think of is somehow something is shorted and now the system gets its ground from or through the RCAs. Any tips, ideas, on how to diagnos, rememdy this problem would be greatly appreiciated! Thanks!  




Replies:

Posted By: i am an idiot
Date Posted: May 22, 2011 at 2:23 PM

Nothing is shorted.  The unit is grounding through the RCA cables just as you suspect.  Did she pull the ground wire out of the unit.  If so, you need to reattach it.




Posted By: js699k
Date Posted: August 21, 2011 at 12:23 PM
Yes, definitely reground the proper ground wire, using the RCA connection for a ground is not ideal and can even cause a short.

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carvideocraze


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