Wrap-up:
Drill a 5/16" hole into the plastic interior A-pillar cover next to the spotlight shaft that will accommodate the supplied rubber grommet, and feed the spotlight's power cable through. (Depending upon your dexterity and luck, you may have to temporarily pull back / remove the interior A-pillar cover to feed the cable down through the top of the dash right below the plastic cover.)
Use the supplied retaining clip to secure the power lead to the shaft.
The single power lead should appear up under the dash by the driver side kick panel where it can eventually be connected to a fuse terminal inside of the interior fuse box. A 20 amp fuse is recommended.
I happened to use an Add-A-Circuit for my connection. However, since there are a dozen different ways to provide power to auxiliary add-ons on the FJ, I'll leave that up to you.
Positioning of the spotlight head is set by loosening the side tensioning screw on the exterior A-pillar mount and rotating the entire spotlight assembly until there's about a 90 degree free-travel movement of the head.
For reference, the "parked" (down) position of the head should sit about an inch from the windshield, making sure that operating windshield wipers do not contact it in it's lowest position.
Once positioned, tighten the tensioning screw.
Adjustment of the free-travel friction/dampening is made with an Allen wrench at this location.
Adjustment of the spotlight head rotation friction/dampening is made with an Allen wrench at this location.
Now, replace any previously removed panel parts, remove the masking tape, re-connect the Negative (-) terminal on your battery, and use a large towel to wipe off the sweat that you're drenched in.
And, guess what . . . . . ??
. . . . you're done!!!! 
