Ready to see how you did this! What mode do you have? I ordered the Big Bend and I don’t think (not 100% sure) it has ambient under passenger side..So, had a warm day where I felt like tackling the project. It turned out to be easy enough to figure out!
I'll make a detailed write-up probably tomorrow, but the gist of it was I bought some 20awg wire, wired it to the ambient light assembly under the passenger side dash, and voila! It will dim/brighten with the controls in the SYNC 3 menu.
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