Dimming my light bar switch.

I've searched for a thread on this but was unsuccessful. I recently installed a Cali raised led light bar, with the Toyota style switch in the picture. My question is where can I tap into a dimmable wire for the dash lights so that the switch dims with the rest of the dash lights? Specific locations and wire colors would be appreciated.

 

Try this thread https://www.tacomaworld.com/threads...h-to-be-darker-like-oem.495880/#post-15820877 there's a couple posts that talk about what wires to tap.