I have a CD player that gets can change the volume based on the speed you are going to account for engine noise, etc. I need to connect a wire from the head unit to the speedometer and I don't know which wire to attach it too. Does anybody know? Would this be a question better asked in the in car entertainment forum? Thanks.
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Originally posted by LikeCDooswhynot just turn up the volume if you need to, i think if it got louder by its self that would be annoyingTenured Automotive Service Professional - Avid BMW Enthusiast
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