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-   -   Strange Issue with RB1 Radio and Sirius Sat (http://www.ramforumz.com/showthread.php?t=127812)

IN2H2O 12-08-2012 08:49 PM

Strange Issue with RB1 Radio and Sirius Sat
 
I upgraded my 2002 Dodge Ram with an RB1 Nav unit and sirius tuner a couple years ago and have had an intermittent issue ever since. I have spent countless hours searching online and other forums trying to resolve it with no luck. Hopefully you all will be able to help me.

Sometimes when I put the key in the ignition and turn it on, the sirius comes in but full of static. It seems to do it more often when the truck is hot like after a long summer day in the sun. Only Sirius is affected, AM/FM and CD all function properly.

I have to remove the key, cycle the lights, press the brake, open the door and wiggle my nose just right and it will work again. I have it figured out now that if I insert the key and turn it to ignition before I close the drivers door, it will never happen so I suspect it has something to do with the auto dimming cab lights?.?.?

Almost seems like something else is on the bus with the sirius unit and causing interference.

Anyone have any insight or ideas? Do I need to take it to a dealer and have them refresh my ECM to include the Sirius unit?

Excoastie 12-09-2012 07:38 AM

I'm not familiar with your specific truck, nor the head unit that you're referring to, so please understand why I'm throwing stupid questions out there.

I'm guessing that this is a OEM head unit that you installed in your truck. correct?

If so I'd check all of the connections yet again, especially the ground, concentrating on the Sirius unit, as everything else seems to work great. It almost sounds like you've got an intermittent ground loop type of thing similar to what you get when you badly install a cheap amp.


Hopefully someone with more specific info, and not just guesses will come along shortly.

good luck, and be sure to let us know what you find


Exco

IN2H2O 12-09-2012 12:17 PM

Factory Head unit, factory harness and connections. All grounds are solid.

Here's a rundown of the unit specs.
http://www.dodgeboy.net/news/navradio/index.htm

IN2H2O 04-21-2013 05:07 PM

Found my issue this past weekend when I pulled the entire system and swapped it to a newer truck. The roof mounted sat antenna had rubbed thru the dome light wiring harness and was contacting the wire for the interior light circuit. If the dome light was lit up when the unit was initializing, it would scramble the unit.

Glad to finally put this one to bed.

IN2H2O 04-23-2013 09:26 PM

So much for that. It did it again the last two days in a row. It is somehow heat related as well as the dome light as it only happens on warm days. If I get in the truck and cycle the key to the on position before I close the door, it works right every time. If I get in, close the door and crank it up, it comes up with static over the music every time.

I am almost to the point where I pick up another radio of ebay and try it out.


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