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Old 03-26-2014, 02:00 PM
TerminatorX5's Avatar
Join Date: Jul 2006
Location: Stafford, VA & Harrisburg, PA - USA
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the video image on the monitor is generated by the nav unit. flickering can be due to internal issues with the nav unit, or wiring issues.

the radio cutting in and out is more of a radio issue, or, can as well be part of wiring issue

thus, there could be two separate issues, the nav comp flickering, and radio cutting in/out, or, the wirinig can be culprit...

a proper troubleshooting is of paramount importance - to do the troubleshooting without tearing half of the car aprat, you should try to replicate the issue under various conditions, and note the conditions (write them down)
- does screen flicker in unison with radio in/out?
- does flicker happen before? or after the radio is out?
- does screen flicker when you hit a bump on a road?
- does radio cut in/out with the bumps on the road?
- does it matter if the car is cold? or hot?
- does AC interfere with any of those symptoms? (AC wiring runs in close proximity to monitor wires iin the dash)?
- do symptoms show when the engine is not running (but key is in ACC position)?
- when you knead the wires at the radio module in the trunk, does it change anything?
- when you knead the wires at the nav computer in the left side pocket, does it change anything?
- is there any evidence of moisture in the side pockets? moisture in the battery tub where the radio is located?

once you get your basics covered, then you might want to contact Baris and he will tell you if will take your case or not...


E53 X5 4.6iS
147K mi - Sold May 2013
Tireprints left in:
USA, Nicaragua, Costa Rica, Panama, Russia

E53 X5 4.8iS built 2005-10-17
66200 mi - June 2012
96000 mi - June 2013
112000 mi - June 2014
OEM fire extinguisher
OE first aid kit
OE tow hitch
OE TV module
OE aspheric mirror
K&N air filter
black/white badges
rear camera
4-channel video recorder

Here is the list of things I have done to the X
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Old 03-26-2014, 02:15 PM
upallnight's Avatar
Join Date: Aug 2012
Location: Cook County
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Originally Posted by CarlosT95 View Post
Yeah I figured it would have to be rewired because the connectors on a aftermarket head unit are no where near the same as the original nav unit
There are head unit units that are plug and play but not with a DSP system.
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
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Old 04-23-2014, 08:48 PM
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Join Date: Jun 2013
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Originally Posted by upallnight View Post
Kinda hard to check the Nav Screen for DSP if the nav screen is blank!!!!

There are NO aftermarket head units that will work with BMW DSP system. If you want to use an after market head unit with Nav you will need to rewire the entire truck.

Sorry, misinfo. I am running my APPRADIO3 through DSP wonderfully.

I extended the MID wires, to move it to the glove & moved the CD player to the cubby where the amp is cd changer would be & attached four wires from the CD changer harness to the cd player.

I found the wire #s here:
Installing aftermarket HU in BMW retaining DSP amp. - YouTube

A fourth is needed to keep it from shutting off after 15 minutes I think #6
BMWCCA # 480346

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'90 e30iC sold
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4.4i, nav, radio

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