OK so I just had a speaker/light bar combo and a ws420 installed on my 2k9 21V. When I picked it up everything was fine. They wired the lights off the bottom right accessory switch. So 2 weeks later we're on the water and I try to turn the lights on and they don't turn on, and I'm like huh. Then I look at the switch and its not even lit up (little red light). Its the only switch not working.
So today I cycle the key to on and hit some switches and still everyone works except the new light bar one. So I pull out the switch panel to see if something became disconnected and everything checked out fine. But now when I check all the other switches they don't light either now. No stereo, no anything. Wtf just happened.
Where should I start. I picked up a test light today but apparently it only works on AC not DC. I wanted to check it out myself rather then drive it back to the dealer which is an hour away.