Quote:
Originally Posted by bravosvo
So I installed the bypass harness in my '18 and I think there is some bass loss. Has anyone else experienced this after installing the new harness in an '18?
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I specifically checked for that as I know early users of the harness experienced it. However I forget the exact date, but while the early harnesses went by BMW's incorrect wiring diagrams , the error was subsequently fixed and ones received after that were perfect. My bass is as strong as it was prior to installation. I believe they were changed in early '17 or just before.