Can anyone recommend wiring gauge for wiring lights. I'm converting to all LED and adding some different under lighting. Just looking for any recommendations. Thanks guys

 

LED's don't pull the amps that incandescents do so factory wiring ought to be fine. If I was guessing, probably 18 gauge.

 

18 ga is more than enough, you could certainly use thinner to meet the electrical demand. Most of the reason to use heavier wire than required is to withstand the abuse of the vibrations and the occasional tug when adjusting something else and you pull that wire by accident.