Originally Posted by Oliver220
2013 Allegro 34TGA. The dash radio is only powered by the house batteries even though there is a radio switch on the dash. Why Allegro chose not to power the radio thru the ignition switch is dumb. The clock on the radio will not work the way allegro has it wired. (The radio has the wiring harness to make it work this way.) The dealer says nothing they can do about it.
First off where the dealers lips moving when he said, "nothing they can do about it"?.......that's how you know they're lying
On my old coach the dash radio is powered by the house batteries, but the "clock/preset station memory" of the radio is powered by the chassis battery....(there are IMO, good logical reasons for that arrangement).
Since your "radio has the wiring harness to make it work", simply connect the "memory wire" of that wiring harness to an "always on" hot lead from the chassis battery.
If you want the radio itself to work off the chassis battery, connect the "radio power wire" to the same hot chassis battery lead.
However, if you want the radio power switched on/off by the ignition key, and not lose the memory, connect the "radio power wire" to "an on with key switch" lead and the "memory wire" to "an always hot" lead.
That will should solve your perceived problem.
BTW I don't think an ybody knows why most things are done the way they're done by any coach builder, (not just Allegro).