I have my driving/fog lights such that I can select them to come ON and OFF with the dimmer-switch, turn them ON regardless of headlights or no, or turn them OFF completely.
I also have "cornering" lights, which are wide-angle driving lights that I mounted under the front corners of the bumper, aimed at around 45* toward the sides, and operate the same as the above mentioned fog lights; these are very nice when turning from the road onto some dark narrow little road that may have deep chasms on either side for one to fall into; they also light up the sides of the normal headlight pattern nicely, exposing any deer or pedestrians that may be just out of the headlights line of view.
All of these extra lights immediately flip OFF by depressing the dimmer-switch.
Loop a wire from the main HOT feed of the dimmer-switch, through a toggle-switch, and to the DIM wire after the dimmer; turning this switch ON gives you both BRITE and DIM elements ON together when the BRITE lights are selected by the dimmer-switch.
Make the cold side of the reverse-light wire trigger a relay that powers as many big backward facing flood-lights as you desire (with a toggle-switch that enables you to select them at will); this is a big help when backing or working behind the truck.
I have a center-mounted one facing straight back and one angled at 45* on each corner.
When you get all of this done, I have more projects for you.