I've got a BECKER Mexico Pro headunit in my Coupe with HK upgrade and have until now used a standard ISO connectors. This means that the amp is receiving high volume inputs instead of the "proper" pre-amp inputs.
I've bought another ISO connector for "BMW upgrade sound systems" which has half an ISO connector for the power, illumination etc and four phono/RCA cables for connecting to the pre-outs.
However, there are no Phono/RCA socket pre-outs on the back of the headunit, just a "socket C" which has small pins and looks like it should have a unique Becker lead connected to it which the headunit never came with.
How have other people with a similar setup connected it up? is there a cable available for this socket (did you headunit come with it?).
I've bought another ISO connector for "BMW upgrade sound systems" which has half an ISO connector for the power, illumination etc and four phono/RCA cables for connecting to the pre-outs.
However, there are no Phono/RCA socket pre-outs on the back of the headunit, just a "socket C" which has small pins and looks like it should have a unique Becker lead connected to it which the headunit never came with.
How have other people with a similar setup connected it up? is there a cable available for this socket (did you headunit come with it?).
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