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Old 03-22-2015, 07:01 PM   #1
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12 volt electrical problem

We brought our TT home after storing it for the winter. A couple of days ago we noticed the battery was only showing 2/3 full on the panel and the overhead lights seemed a little duller. We tried charging the battery with no success. We bought a new battery today and charged it but we are getting the same reading. We did replace the electric tongue jack but I disconnected that and the tire minder from the system send it keeps doing the same thing.

Any ideas as to what are next move should be? We are headed to Martinsville on Thursday for the NASCAR race.
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Old 03-22-2015, 07:13 PM   #2
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When you plug it into 120V do the lights get bright again? All the fuses OK? Make sure the 120 to 12 is working.
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Old 03-22-2015, 08:11 PM   #3
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When we are plugged in to 120 there is no difference. We did notice a bad 15 amp fuse and replaced it.


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Old 03-22-2015, 10:31 PM   #4
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Just an idea here.. Our converter has several 30A fuses, did you check those?
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Old 03-22-2015, 10:41 PM   #5
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If you plug into 120V and it still goes down then it's sounds like the converter isn't converting. If it was, the lights would be back up to bright. Check all the fuses and the hidden thermal breakers.
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Old 03-23-2015, 07:09 AM   #6
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Thank you. What is a hidden thermal breaker?


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Old 03-23-2015, 07:44 AM   #7
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Quote:
Originally Posted by Highway 4x4 View Post
If you plug into 120V and it still goes down then it's sounds like the converter isn't converting. If it was, the lights would be back up to bright. Check all the fuses and the hidden thermal breakers.
I will second that

A hidden thermal breaker....

Hidden...Means it is hard to find,,See "Joke" (Or is it) below

Thermal: Heat operated

Breaker: Circuit interrupter (Resettable Fuse)

These come in two flavors..Automatic Reset (On some time alone resets,,Others you need to open the circuit to stop current flow and THEN time resets)

Manual: Push a button to reset

Mine is Automatic time alone 80 amp

The "joke"
I think that back at the factories (Both the chassis factory and the body builder) They have a contest to see how well they can hide stuff like circuit breakers,,,Fuses,,,GFCI's and Switches.

Among other things.
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Old 03-23-2015, 07:49 AM   #8
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Some of these links may help you out has TT wiring systems.
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Old 03-23-2015, 06:37 PM   #9
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Thank you all for responding. This is a great forum with equally great people. Everyone kept directing us back to the fuse panel. We pulled every fuse and found two 40 amp fuses which did not have an indicator light were blown. Replaced the fuses and all seems to be in good order. Guess I didn't need to buy a new battery but at least I know I have a good battery.


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