In the past, the solution for most owners with a defective light switch panel is to order a new switch panel. Mine are pretty much closed units so little change for repair..... other than replacement.
Gary and Dee, Zowie and Bowie (traveling cat sibs)
2019 Cornerstone 45B, X15-605hp, Imperial, Spartan K3,
2013 Honda CR-V toad, Demco Excali-Bar II,
Demco Baseplate, Demco Toad Light system, 73 de W5Fi