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Old 09-15-2017, 10:23 AM   #1
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Brand: Thor Motor Coach
Model: ACE 29.3
State: Missouri
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THOR #5437
Dash Radio

I have a 2017 ACE, my wife and I have taken sides on where does the dash radio get its power from. I told her the power comes from the engine battery and she tells me it comes from the house battery.

I hope you all can declare one of us correct.
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Old 09-15-2017, 10:43 AM   #2
gmc
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Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
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THOR #2829
Quote:
Originally Posted by be happy View Post
I have a 2017 ACE, my wife and I have taken sides on where does the dash radio get its power from. I told her the power comes from the engine battery and she tells me it comes from the house battery.

I hope you all can declare one of us correct.
And the winner is.... Both of you....lol...
Some rigs may vary, but typically the dash radio gets 'primary' power from coach batteries and 'keep alive' (clock, etc) from chassis...
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Old 09-15-2017, 11:29 AM   #3
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Brand: Thor Motor Coach
Model: 29h outlaw
State: New Jersey
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THOR #5248
Not my 29h. Keep alive power is from coach battery side of transfer relay through a in line fuse. Switched power is from fuse 9 in the coach power distribution panel. How do I know this? Because my fat fingers blew the keep alive fuse and it took my two days to find it. With no help from Thor support!
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Old 09-15-2017, 02:11 PM   #4
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THOR #2829
Why I started with "Some rigs may vary, but typically"

To find out on a particular rig - have the radio on and clock set... Disconnect from shore power - no genny running (those bring the BCC or BIRD/Trombetta into play...)

Fully disconnect the coach batteries (use/store may not be enough - 'keep alive' power could bypass this...)

I expect in most cases the radio will go off... if so - main radio power is from coach.

Wait a minute or so - then reconnect the coach batteries... See if the radio retained time/date... If so - your 'keep alive' is from chassis... if not - your 'keep alive' is from coach...

(Of course need to alter sequence if your radio stays on with coach batteries removed.... or could mean your batteries are coupled when they shouldn't be as someone else saw recently...
Ain't consistency nice? )
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Old 09-16-2017, 09:02 AM   #5
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Brand: Thor Motor Coach
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Thank you for the information. Will now have to have wife on stand bye so she can find out answer.
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