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There are no wires that go directly to the BCM. Each module has one serial bus wire that goes to one of the two Star connectors for the serial bus. Then one wire goes to the BCM from the second Star connector. The two Star connectors are tied together as shown.
If you want more specific info give us your car year so we make sure the colors are correct. Also if you need the BCM connector view let us know.
Here is an example of what it looks like for 2001.
