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Discussion Starter · #1 ·
Can someone knows how to read this scheme? I need to retrofit universal lumbar support, which have audi style button but would like to wire it on the original button to keep OEM look. OEM button has 6 wires on connector. I need to know which one is positive and which one negative.
See picture for wire colors?

Original WDS scheme: BMW WDS Online

926871
 

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'03 325iT Mystic Blau
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4,400 Posts
I'm not sure that we can help you given that you're only giving us half of the equation.
What's the diagram for the lumbar system that you're trying to install? Is there a reason that you're not doing the straightforward OEM lumbar installation? It was pretty easy to source the whole system here in the US, and it plugs right in.
 
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