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SharkHead
Join Date: Oct 2009
Location: Pacific Northwest
Posts: 1,027
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Try Roger for the cd manuals. A red lead (2.5mm) goes from the Cooling motor directly to the control panel plug Q3 then to pin 87 of the cooling fan relay (XVIII). The fuse (#16) goes to pin 30 of the same relay providing the voltage to pin 87 when switch is on.
There a few dependent devices that are in the circuit...you need the current flow diagrams...
This info is for a '79, but should apply to you.
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'79 928, 85k Opal Metallic
'99 BMW 540i, 97k Titanium
'72 BMW 3.0 csi, 85k km (euro Deutschland '82) Taiga
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