On ours, you push the knob until it reads fade, then turn it to +7 (all the way to the right). Minus 7 is only awning speakers and 0 is both on.
2018 JayFlight SLX 212QBW
1999 Ford F-250 Super Duty Lariat SC, 7.3L PSD, 3.73
Transfer Flow 50 gal aux; Andersen WDH; Prodigy P2
😁 "If a man says heíll fix something, he will. Thereís no need to remind him every 6 months.