12 Volt issue

techman1057 · 04-30-2012, 12:31 AM

I have a 2008 8 foot flagstaff 176ed Tent trailer unfortunately due to surgery and knee issue I have to sell my unit, and wouldn't you know it it has sat for 3 yeras and i have plugged it in and run it off and on and now someone is interested in purchasing my tent trailer and the 120 volts works fine for every thing but the 12 volts on its own is not working, I have a new battery but it is not a RV or Marine battery and it has 12.6 volts in it, i used it to raise the trailer up but nothing else works is the battery the issue? the really bad thing is i was checking the wiring behind the converter and it has a few wires that fell out when i started to check them and put it back in place then i was checking behind the detector and one of the wires was off again if i had a schematic might help but i think the bigger issue is the reason for 120 working and 12 volts will not please can someone advise if its maybe just the battery was wrong type and to low or different issue.....thanks

Triguy · 04-30-2012, 06:50 AM

Welcome!

Unfortunately, RV manufacturers do not provide detailed schematics of the electrical system. However, the converter will have a schematic. What make and model number do you have for the converter?

Is this a car battery? These are not useful for a camper as they will not take many deep discharging cycles before failure. But, in your case, it's new and you say its fully charged so it should be providing some power, I think. Your problem sounds like the wiring but it could be any number of other problems from a simple wiring issue, to a blown fuse, bad relay in the converter, etc.

I'd start with:

Check to make sure your battery is not wired backwards.

Check the fuse between the battery and converter.

Recheck and tighten all your converter wiring.

Triguy · 04-30-2012, 06:54 AM

I reread your post and need to clarify something. Did you say that you are able to raise and lower the roof but nothing else?

**KyDan** · 04-30-2012, 07:24 AM

Any 12v battery will work for what you are wanting.
It doesn't have to be an RV deep cycle battery.
As long as it's charged- it should work.
You say it's got 12.6 volts so that should be nearly full charged.

It could be a blown fuse or more likely from what you say a bad connection.
You said wires had "fell out". Are you SURE they are back in the correct places
and tight??
There is no schematic. Trailers rarely have them. It's up to you or someone more
knowledgeable to figure it out. Start at the battery and move out with a meter.
I assume you have some sort of a fuse box?? There should be 12v at the fuse box
main buss. I guess you probably don't know what that is?
Get help. It's going to be very hard for us to trouble shoot your problem from
our end.

Sorry. Good luck!

techman1057 · 04-30-2012, 02:43 PM

Thank You everyone who replied the issue was the ground side was at fault i checked all the wires by opening up the converter and analized it till i figured out which wire was the 12 vlt supply by constructing a long jumper to ground and then found the hot 12 volt lead, and then checked all the fuses they were all powered up but did not work anything so i decided the ground did not have a pathe back to the frame, i found the bad connection fixed it and its all working now.........Thanks for your help.....

dnaraG_1M · 04-30-2012, 04:08 PM

Quote:

Originally Posted by techman1057

Thank You everyone who replied the issue was the ground side was at fault i checked all the wires by opening up the converter and analized it till i figured out which wire was the 12 vlt supply by constructing a long jumper to ground and then found the hot 12 volt lead, and then checked all the fuses they were all powered up but did not work anything so i decided the ground did not have a pathe back to the frame, i found the bad connection fixed it and its all working now.........Thanks for your help.....

anal-ized????

Boy is THAT appropriate to camper wiring!!!!!!

Need to that more often to mine..............

cheers,
johnd
[Unrepentant Punster]

OldCoot · 04-30-2012, 04:17 PM

If all posts were eliminated from this forum for spelling or grammar, the forum would disappear.

dnaraG_1M · 04-30-2012, 04:41 PM

Quote:

Originally Posted by dunnnc

If all posts were eliminated from this forum for spelling or grammar, the forum would disappear.

And bits of inadvertent humor would disappear also.
And that would truely be a loss........

cheers,
johnd

**KyDan** · 05-01-2012, 07:59 AM

Quote:

Originally Posted by techman1057

Thank You everyone who replied the issue was the ground side was at fault i checked all the wires by opening up the converter and analized it till i figured out which wire was the 12 vlt supply by constructing a long jumper to ground and then found the hot 12 volt lead, and then checked all the fuses they were all powered up but did not work anything so i decided the ground did not have a pathe back to the frame, i found the bad connection fixed it and its all working now.........Thanks for your help.....

John, THAT's the longest sentence I've seen in a long time

We ARE glad you found the problem and hope your sale and recovery
go smoothly.
Thanks for the follow up.

We LOVE a happy ending!!

**Herk7769** · 05-01-2012, 08:57 AM

Quote:

Originally Posted by techman1057

and analized it till i figured out

Here I though only I did this...

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