80'stech,
I've reviewed several videos. No one make a reference to the long three prong connector. Every intake video does show it under the intake. Down low but no reference to where it's connected. One video for 1 second showed it to the octopus wiring harness. I took a video pic to check when I work on it tomorrow. The bottom one is likely the IAC connector. Those connections didn't come off until the intake was removed. It's why I missed putting tape on them and their locations. I should have all the info needed to put it back together. I'll do a little more clean up too. The delay now is a Bosch starter replacement.

Bdc101,
During the winter, it only had goo at the oil cap. Mostly for not being run long enough. Short city trips don't help. After this round of maintenance, I have no hesitation about driving far away from Austin. It's first voyage may be a 800+ mile round trip!

Thanks for y'all's help and replies!

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'06 X5 3.0i - bought @143,123 miles (12/26/20)