@smee I think you need to look at the etk to see how it goes together as this should clear it up for you along with @rotzy description.
http://www.realoem.com/bmw/enUS/show...diagId=11_5597
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Previous Rides: 13' 135i, 08' 130i, 03' HKS Turbo'd 350z, Modded GC8 WRX, NA MX5