A moisture check also might be in order. My RCA has been acting strangely for a year during rain/Tstorms/lightning. It switches channels & generally is inop. It's OK after the storm passes. I suspected an electric anomaly and/or moisture. Removed the surrounding closeout and out POURED water! No wonder there were problems! When dry, it works fine.
On the roof I found problems with sealant on the radio antenna & a few other suspects. Also re-sealed one fwd cap marker light and tightened screws on the others. Since then, had one moderate rain w/no leaks. Need a frog-strangler to check for sure.
03 Adventurer 38G, W22, 22.5 Whls
Koni FSD's, TracBar rear, SteerSafe, 50A SurgeGuard, Eternabond; 2012 Honda CRV EXL w/Nav & AWD