Quote:
Originally Posted by Mitco39
... What really doesn't make sense to me is the green highlighted route, seems sort of dangerous you short out any of the components being supplied by 3 and you are now drawing power directly from the BCM.
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The green line: power comes from fuse #3 to the Defogger Relay coil. The BCM sinks to ground in this case. The BCM is not supplying power to the defogger coil.
The Ignition and Blower coils are powered from the BCM, but the Defogger coil is wired "bassackwards" and grounded through the BCM.