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02 volkswagon jetta, data wire


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larkster 
Copper - Posts: 98
Copper spacespace
Joined: October 04, 2003
Location: Canada
Posted: March 08, 2006 at 10:29 PM / IP Logged  

hey havent done many volkswagons,  I have to do one tomorrow and the customer says the dealer told him there is a data wire that if you hook up it causes all sorts of problems.  I have never heard that before can anybody clear this up for me.

thank you

KPierson 
Platinum - Posts: 3,527
Platinum spaceThis member consistently provides reliable informationspace
Joined: April 14, 2005
Location: Ohio, United States
Posted: March 08, 2006 at 10:52 PM / IP Logged  
There is a data wire that runs to the OEM radio.  If you replace the OEM readio with an aftermarket radio and the dealer plugs in their scan tool (with the aftermarket radio installed) it can cause damage to the dealers equipment.
Kevin Pierson
Velocity Motors 
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Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: March 09, 2006 at 9:27 AM / IP Logged  
I've done a few and no problems with the databus modules that I've used for the door lock interface. Must be a dealer problem 02 volkswagon jetta, data wire -- posted image.
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
tcss 
Silver - Posts: 1,623
Silver spacespace
Joined: June 07, 2004
Location: United States
Posted: March 09, 2006 at 1:47 PM / IP Logged  
There are two constant wires on the factory harness. Use the large thick one on the end of the power plug. DO NOT use the thin one on the other side of the plug. I believe the large thick one is red with a white stripe. Then go to your local Volkswagon dealer and show him you know about these cars, my local dealer refuses to service any cars with aftermarket radios unless they have been installed at my shop. Great advertising.
There is no such thing as free installation!
geepherder 
Platinum - Posts: 3,620
Platinum spaceThis member consistently provides reliable informationspace
Joined: October 27, 2003
Posted: March 09, 2006 at 8:10 PM / IP Logged  
Do a search in this forum and you'll find a few posts by the knowledgable Gus.  If you hook up the wire in the metra harness labelled power antenna, and your antenna is not poweRED / amplified, that wire is used for the databus and will cause problems if you hook it up.
My ex once told me I have a perfect face for radio.

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