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Found a good schematic, thx to PAX5
The instructions in Ista are very limited. I was hoping to find the complete retrofit guide but apparently no such thing. Found the wiring assignments in Ista, going try make some sense of it today.
Intercepting the reverse signal at the hitch socket is counter-intuitive as the trailer module and the PDC module neighbor each other in the trunk I think. If the sensor wire connected to this plug, there would be no connection to the actual sensor in the bumper. Could be for the auto hitch but that is not shown in the wiring diagram. EDIT: Mystery plug is for CAS antenna module.
EDIT: Found the below with a google search, Xoutpost contains so much excellent infomation :-) This is perfect, when my pigtail shows up I will disassemble the harness and discard what I don't need. The solder in the pigtail and it should be ready to code.
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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior
Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...
Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.
Last edited by TriX5; 11-23-2020 at 11:18 AM.
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