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Old 04-11-2020, 12:04 AM   #1
Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 6
THOR #18530
Both Radios Don't Work


We took out our house battery for the winter. When we replaced it, the cables were put on backwards and there was a spark. The battery is on now properly and everything is working except for our front radio/backup camera and the back bedroom radio.

We replaced all fuses, including the one behind the front radio. Still, neither radio is working. We reset the front radio too, still doesn't work.

Any ideas on what we can try next?


2015 Thor Freedom Elite
Class C 28h

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Old 04-11-2020, 12:21 AM   #2
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16ACE27's Avatar
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 9,799
THOR #7035
Define "everything is working".. Does the fridge, furnace, and DC lights work? Did you check both reverse power fuses on the DC distribution panel? Is the USE/STORE switch in USE? Have you checked the 50 Amp DC breaker from the battery? Have you checked the power fuses at each radio.

Your story has been told just on this forum at least a half dozen times this year.

How do so many people hook up battery cables backwards?
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
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Old 04-11-2020, 12:29 AM   #3
Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 6
THOR #18530
Thank you!! These are good suggestions...we will try them!
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