So today I installed my Kenwood TK-7150 2 way for comms in my M1008 I’m with the local fire department and I volunteered to install comms. Has its own fuse block ran straight to the battery with a 12v switch and high amp relay. Radio turns on no issues there, however when I transmitted an odd buzz was heard somewhere under the truck. Pushed it a few time trying to see what the heck was buzzing. After about the fifth time, something popped under the dash and now my wait to start lamp no longer turns on. Very odd being it has its own power supply and not tied to anything in the truck other than battery. Anyone have an idea on what the heck happened?