Yep, stupid mistake... Getting ready for a 7000 mile trip so I installed a new deep cycle heavy duty battery on the TT. Now the stupid part. I wasn't paying attention and reversed the positive and negative. :o. The refrigerator won't work now. When I try to turn it on all the indicator lights come on. Power, Auto, Gas, AC, Battry.... But the fridge doesn't choose one or come on. :S Called the dealer and he said he's booked till May but I begged and cajoled and he said I can bring it in Tuesday. Everything else seems to be working. What else might I have fried? What else should I look for? What should I have him check? I could kick myself for such a rookie mistake....

I would have thought that a relatively new rig such as yours would have a converter with a reverse polarity fuse, the purpose of which is to blow if you inadvertently hook the battery up backwards. If so though I would have thought you'd have no 12 vdc power at all ... nonetheless, have you checked for a blown reverse polarity fuse? :@

SoundGuy wrote:I would have thought that a relatively new rig such as yours would have a converter with a reverse polarity fuse, the purpose of which is to blow if you inadvertently hook the battery up backwards. If so though I would have thought you'd have no 12 vdc power at all ... nonetheless, have you checked for a blown reverse polarity fuse? :@I agree, and certainly you are not the first to do this. I would look for circuit breaker, or fuse, like mentioned. It really should not be that big of deal.Good luck!Jerry

There are frequently some fuses on the refer control board too. I would also disconnect power (don't just turn it off from the front panel) from the refer by either removing the main fuse or the fuse that provides power to the refer. Let it sit for a minute or so and repower. You may get lucky and you just confused the control board.Converter reverse polarity protection fuses are usually located on the converter itself and not on the main fuse panel.Find a mobile tech (local campgrounds usually know a couple) and save yourself the hassle of hauling it to the dealer. If your dealer knows what you did it will likely not be a warranty repair anyway.

Check all fuses and circuit breakers including the one located closest to your battery. If you tripped that main battery breaker and blew the converter's reverse polarity fuse, you won't have any 12V power to the fridge.

Make and model of refer would help.Since it is getting power to the display panel the refer is getting power.Disconnected from shore power.Disconnect battery.Locate the battery fuse in the 12 Volt DC panel.Connect battery up.Use volt meter to check for 12 volts DC to bat fuse holder. No power? Check fuse or circuit breaker near the battery. Could be in battery box, along frame rail under front of trailer or in junction box where the Battery cable, umbilical cord and trailer wiring comes together.Another way disconnect from shore power.Disconnect battery.Plug into shore power. Check for 12 volts DC in 12 power distribution panel.No power. Replace or test, do not look, at reverse polarity fuses.Post make and model of converter.

Uuuggghhhh! I screwed up! | Good Sam Community

enblethen
Nomad
Mar 19, 2016
Then you start falling into the SAE.
Anmacc2
Explorer
Mar 21, 2016
Yay!!! Took the TT into the dealership today and it took him ten minutes to diagnose the problem! A blown fuse hidden in the outside refrigerator panel. Replaced it and it is working perfectly! Yippee yappee Yahooey! Ready, Set....... Depart April 28, 2016!
westend
Explorer
Mar 21, 2016
Have those cables marked or colored yet?
enblethen
Nomad
Mar 21, 2016
Thanks for the update!
CavemanCharlie
Explorer III
Mar 22, 2016
enblethen wrote:
Thanks for the update!

X2
profdant139
Explorer II
Mar 22, 2016
Great news!
MFL
Nomad II
Mar 22, 2016
Like I said, you are not the first, that's why they have fuses and circuit breaks. Be nice if they didn't hide them from us! :)

Thanks for the update.

Jerry
Anmacc2
Explorer
Mar 22, 2016
westend wrote:
Have those cables marked or colored yet?

Oh come on... How stupid do you think I am? Do you think I'd make the same mistake twice? What are the odds? :h
Passin_Thru
Explorer
Mar 22, 2016
Some refrigerators have a fuse in the rear, ours does but what a bear to get to. It will make you dig up earhtworms, tie them it knots and rebury them.
westend
Explorer
Mar 22, 2016
Anmacc2 wrote:
westend wrote:
Have those cables marked or colored yet?

Oh come on... How stupid do you think I am? Do you think I'd make the same mistake twice? What are the odds? :h
lol, we'll see. :)

I use red and black heat shrink. It's the easiest method I've found and it also serves to seal up the space between the terminal and the wire.

Glad to hear nothing was permanently damaged, though.

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Uuuggghhhh! I screwed up!

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