There's opportunity with just the stock lighting to improve overall light output. DOT requirements only allow two pairs of front lights at any one time. So when one turns on the high beams, the fogs will go off. Can override this function such that 3 pairs of lighting - headlights, highbeams, AND fogs go on. This can make a big difference, especially if the bulbs get upgraded in any or all those positions as well.
There's multiple way to do it. Here's a couple strategies
Running Fog Independent of Headlight
I may very well just add a relay and switch outside of this so I can turn on/off the fogs and avoid additional complexity here. That's what I would recommend. Remove the FR FOG relay and plug in some spade terminals to the sockets at pins 3 and 5 and connect to your own external relay and...forum.ih8mud.comSwitch Panel / Switchpros Install Underhood Tap Points
Lots of people have installed these but I couldn't find a good reference as to where to tap for various things underhood. Here's my attempt to document some of the more common taps and triggers. Including a much wanted stock fog light override function. I'm using a 1/4" gland fitting to route...forum.ih8mud.com
It'll differ how to add additional lights to different model years of LX and LC. Here's an example of how I added aftermarket Rigid D-Series Pro long throw spots to my 'LX. Between the 3 sets of stock fixtures, plus these spots - 4 pairs all on at the same time, I have light for the asking.
I like the idea of slaving all 3 lights to one switch. I need to be able to get through state inspection every year, so it would likely require a dummy-looking switch.