The Blaupunkt is all I need for my minimal music requirements; I normally drive just listening to the engine, or when in traffic, to local sports radio. If the wife is in the vehicle, then I'll play music, mostly to entertain her (and fill in the awkward silence). I mainly want the readouts, not the music, that an Android head unit would provide, so if there's another way to get that info without changing radios, that'll be OK. I'm also content with using a tablet for Google maps, so a NAV screen isn't a priority, either.

Tried Bimmer-Tool Lite app today; it wouldn't connect thru my OBDLink LX bluetooth dongle (I use it for Torque and OBDLink apps), so I'm ordering the K+D CAN cable for the recommended method that Bimmer-Tool website shows. It'll be here tomorrow, so I can try it then. If it doesn't work for this problem, it'll be on hand when/if I get the INPA/ISTA/PASOFT/Wink/NCSExpert- whatever PC-based programming laptop, later on.

Also, I asked my EE friend to come over tomorrow also, so he can walk me thru what he did electrically, and why, and so I can find what I can use, or fix it. He agreed to appear. The "Avin Android HU/Resler adapter/IBUS app" combo is on my wishlist, anyway, as a last resort.

I dis-assembled the trunk area to look and see what's there: a mystery-heavy black-cut-cable leading nowhere, a cut red battery cable, a module behind the rear seat (with the yellow wire of the rudimentary 4-way trailer wiring spliced into a red wire coming from it), and a metal covered module on the left side, that I can't identify (looks like it has junkyard lettering on it, in yellow). Other than the two cut cables, there are four un-damaged connectors in the trunk. I hope we can identify some of it.

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01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"

Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E

Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide