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Power lost to HU in Caravan

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=19370
Printed Date: July 26, 2025 at 6:25 AM


Topic: Power lost to HU in Caravan

Posted By: SigiDeba
Subject: Power lost to HU in Caravan
Date Posted: September 27, 2003 at 2:40 PM

Hey all,

I've been working off and on a Dodge Caravan.  A couple weeks ago I put in a flip-down screen, a modulator, and a DVD player.  Everything worked fine.  Today I went to add some wireless headphones to the same van.  After I tapped power for the IR transmitter to the headphones, all four of the new devices lost power as well as the head unit.  I also noticed later that the power locks were down too, which could be a big hint.  Oringally, for power to all the new devices I tapped the power wire for the headunit.  That's five compontents feeding off that wire: the headunit, DVD player, modulater, headphones, and screen.  I'm guessing this blew a fuse cause when I checked that same power wire behind the headunit, it has no current.  I had to stop cause I only had a couple of hours so I was only able to check the fuse for the headunit.  It's not blown.  I also took a quick look in the fusebox under the head and checked the relevant fuses there and they are fine.  Anyone ever had this happen or have any ideas I could check?  I don't think I should need to tap the battery and use a distribution block for those five low watt devices... but I need to get power back, especially to the headunit.

SigiDeba



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-Sigi Deba



Replies:

Posted By: auex
Date Posted: September 28, 2003 at 11:35 AM
Don't just check the fuses that you think are related. You should check all of the fuses in both fuse boxes with a meter or test light, it is too easy to glance over a blown fuse.

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

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Posted By: Nocturnal
Date Posted: September 28, 2003 at 9:06 PM
I replace my fuses with ones that have a blown led indicator.  Comes in handy in these situations.




Posted By: SigiDeba
Date Posted: September 30, 2003 at 5:15 PM
Hey guys,  I picked up a test light and it cut my diagnostic time in half.  I was able to check every fuse in the van and find the blown one in less than five minutes.  I have a new favorite tool.  It's a lot easier to manage than a volt meter.  Everything is in, looks, and works great.  Thanks again!

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-Sigi Deba





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