That all looks great Andrew, there is a caveat, the V1 has to be the most recent unit software. Mine is one behind and I'd need to send it to Valentine to be upgraded which costs almost 200.00 (shipped, both directions)

g300d, I have my APPRADIO3, running through the DSP system, it was pretty simple, I used a BMW radio harness to attach the AR3 & moved the MID to teh glove & the CD from the dash to back by the DSP amp & wired in three wires. I have steering wheel volume control & it sounds very good.

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'72 e6Tii rip
'90 e30iC sold