I posted the instructions on the forum a while ago for a friend. I just found them for you. You must adjust the bumper or you'll never get the bracket to disappear.
6/25/2012
I have a few tips on the fog lights:
I think I told you to mount the lights first, then you can hold the bracket in place under the truck and test the location of the lights, make adjustments (left/right & spacing) and test again.
Follow the instructions closely to get the bracket in the right spot on the frame. Then put the bracket on and clamp it to the frame tightly. Mark the holes to drill, remove the bracket, drill the holes, mount the bracket with the clamp again, then screw in the self-tapping screws and remove the clamp.
Make final adjustments (up/down) to the lights and tighten with hex wrench.
If the front of the bracket is visible in the fog lamp opening, you will need to lower your bumper. It appears that the factory bumper install is sometimes low in the middle and high on the ends. There are two 1" nuts that hold each side of the bumper in place. Loosen the two bolts, adjust the bumper down, and re-tighten the two bolts. Repeat on the other side of the bumper.
I had to do this twice! It was perfect, then I took it on a desert track and ran it hard. The few really rough landings shifted the bumper back up and exposed the bracket. I re-lowered the bumper and REALLY tightened the 1" bolts. My recent trips to the track haven't been able to budge the bumper.
Also, you may want to replace the self-tapping screws with nuts and bolts. I replaced the two OUTER screws on each bracket - since you can reach your fingers in the open end of the frame tube to insert the nut.
Here's the end product: