The instructions for 990 are different. I removed the entire SAS, then left the solenoid in its place and plugged the plastic inlets and left the own electrical connection intact to keep EFI light from turning on. The solenoid is tucked up inside frame members just under the front tip of the airbox. I had already removed my airbox, so it was not that difficult to get to, but very difficult if you left airbox on. See one of my former threads for a little more detail.
Good luck!
DP
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