Try experimenting with turning lights off to see if you hear any difference. Some LEDS and other bulbs can cause spurious emissions.
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Andersen Ultimate 3220
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search