Dash radio speakers don't work with Aux Batt switch off.

[Paul T]

I thought the speaker wires had disloged from my dash radio until I placed the Aux Batt switch to the ON position. This might just be my coach but with the Aux Batt switch OFF, I get power to the dash radio, (in both chassis and coach power switch positions ), but no sound from the speakers. This occured with the chassis engine running.

So, if you think you have speaker problem, check Aux Batt switch before you take the dash cover apart as I was about to do!

[Paul T]

I thought the speaker wires had disloged from my dash radio until I placed the Aux Batt switch to the ON position. This might just be my coach but with the Aux Batt switch OFF, I get power to the dash radio, (in both chassis and coach power switch positions ), but no sound from the speakers. This occured with the chassis engine running.

So, if you think you have speaker problem, check Aux Batt switch before you take the dash cover apart as I was about to do!

[vicsryd]

Interesting. Somehow that doesn't sound right.

In the DP's there's a Radio Power switch (Main/Aux) in addition to the Aux Batt (on/off). If both are set to Main/off or Main/on respectively then the dash radio head unit does nothing unless the ignition key is turned to ACC or on, just like a car. If both set to Aux/off respectively then the radio won't come on at all. And of course Aux/on is normal operation without the ignition key.

In my case the Sirius receiver follows the behavior of the radio head unit.

One thing I find annoying with the home theater option is the speakers/amp stay powered on whenever radio power is set to Aux regardless of whether the radio heat unit is on or not. This is a power drain when boondocing. There isn't a indicator light or separate off switch. We only know it's on because the speakers start emitting a quiet clicking sound about once a second when they are on by themselves. Have to flip the Radio Power switch to Main to turn it off.

There is another potential gotcha with the home theater option where the radio is on but no sound out of the speakers. Make sure the speaker switch in the AV bay is set to Radio instead of TV. DW forgets this one all the time.

[SCVJeff]

I believe that the speaker switch located up in the entertainment center is driving a relay that's powered off the coach batterys. When the coach mains are off, the relay defaults to the DVD player.