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12v dc electrical system is not working but batteries are ok. Where is 12v system breaker on my 2004 wildwood 26ft trailer?

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By Code the main battery breaker or over-current protection device is required to be within 18" of the battery or within 18" of where the battery wiring enters the vehicle. This over-current protection device would be on the battery positive wiring.

Posted on Jan 20, 2011

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Wiring diagram for a 1988 sunline travel trailer.some of the light switches and outlets have no power going to them.what could be the problem?


Your trailer has two electrical systems, 12v and 120v. The 12v system has a battery and perhaps a converter/charger to power it. The 120v system must he hooked up to 'shore power.' Both systems have their own protection. The 12v system has a fuse panel, check for power at each fuse. 12v wall switches are often smaller and don't look like typical 120v switches like in a house.

The 120v system has a breaker box and circuit breakers. Reset each breaker by turning off then on again. In addition, the 120v outlets might have a GCFI outlet near a sink. It often is wired first in a breaker circuit, thus giving GCFI protection to other outlets in the circuit. Test the GCFI and make sure it clicks off and can be reset.

May 01, 2017 | RVs

2 Answers

I have a 6000 watt allpower generator that the 12 volt breaker poped out reset it still no power replaced the avr ran for about 5 seconds then poped the 12 volt breaker again what could it be


Barry,

The 12v system does not go through the AVR. It most likely is the Battery Charging Rectifier has failed. This controls the voltage from the 12v feed from the alternator and charges the battery.

1) Follow the wiring from the 12v socket/connectors until you come to a Block rectifier. It will be held on by a bolt in the center and have 4 wires connected to it. If you look at the pins you will see one is seated at a different angle to the others. Test the feed to this pin, you should get a result of between 12 Volts DC to 16 Volt DC.
If you are not getting these results then the Block rectifier has blown and will need replacing. http://www.generatorguru.com/rectifier-98406168/

2) If all is testing fine above, then you will need to test the Battery Charging Rectifier as you have an Electric Start and Battery on your unit. This is a metal block located on the back of the engine, next to the starter motor and it has fins running across it. ( to see an example of this part look up your generator on this page http://www.generatorguru.com/all-power/) Again this should be giving you between 12 Volts DC to 16 Volt DC.

3) Next,check the voltage going into the Battery Charging Rectifier from the alternator. You should get between 12 Volts DC to 16 Volt DC.

For replacement parts please see our web page. You will need the full model number to do this.:

http://www.generatorguru.com/all-power

Dec 06, 2016 | Allpower Electrical Supplies

1 Answer

I have a 2000 23ft comfort travel trailer, it is pluged into electrical, all lights work, but I do not get any power from outlet plugs. I checked breakers & fuses, no outlets work.


On my trailer the gfci is a seperate button in the fuse panel that shuts down the 120v outlets, all the lights run off the 12v so they continue to work, does your microwave and ac work?

Mar 02, 2015 | Microwave Ovens

1 Answer

There is no 12V power to the trailer battery.


This is most likely an issue with the wiring harness going to the connector on your truck you need to start at the connector at the back of the truck and walk your way forward to the breakers under the hood (rarely is the 12 power on the trailer harness connecter simply fused since it is a higher current circuit, it usually uses a breaker just like your headlights). Before you do this find a copy of the wiring diagram for your truck so you know what you are looking for. Also a dead battery normally will not fully charge in the normal time span of a trailer being towed as you can typically figure over 6 hours to charge the type of battery (deep cycle) that is in a trailer.

Mar 28, 2014 | 2006 Ford F-150

1 Answer

How do I prime the hydraulic pump om a dump trailer.


I've always just cycled a hydraulic system full open of the piston and then full closed. The air works it's way out on its own.

Feb 16, 2013 | V, Inc. Dump Trailer Pump 12v Dc Double...

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My lights on my trailer wont work. How do I test the power that goes from my vehicle connector to the trailer.


Hi, 1.connect the trailer connector to the vehicle connector. 2. Make sure your tester is on DC volt selection. 3. Take black test probe (usually negative) to the frame of you trailer. (You want to have a good contact with metal so you'll be able to get a good negative polarity; no rust or paint between the test probe and the metal.) 4. Turn on lights and check the DC volt between the metal frame of your trailor (black probe) and the wires which goes to the lights (red probe).
...if you got voltage (12V or 24V depending of your system voltage) it means that the bulb is gone. (you should have 12V or 24V only on one (1) wire). If you do not have any voltage on one or other wires it probably means that you got cut wires... It might be the case if it was working before.
If its a new installation make sure that voltage is coming out of the plug. (you do the same test but you place the negative probe on metal from vehicle and the red probe into the pins of the connector.)
*** In a DC system we usually get Red as Positive (+) and Black for Negative(-) ***
hope it will help

best regards

Jul 11, 2011 | Gb Electrical GET-213A Heavy-Duty 4-Way...

1 Answer

I have a 2011 Wildwood travel trailer. I tried to use the air conditioner for the first time this weekend. When I turned the themostat to cool and 65 degrees the air unit "clicked" one time but...


First thing to check is that the breaker for hydro to AC unit is in the on position. The clicking sounds like 12 VDC is OK but hydro may not be on to it.

Apr 19, 2011 | Dometic Rooftop RV Air Conditioner

2 Answers

Own 2005 27.5' Wildwood Trailer with a Dometic a/c ducted unit. Last few times out it freezes up initially first few times (pocked circuit breaker once then I turned it off after few minutes second time)....


Don't block off any ceiling ducts and see what happens. If you've closed off any forced air ducts, the unit will freeze up, if too many are closed off. Also, if you shut unit off (compressor) give it 5 or 10 minutes before you turn it back on.

May 21, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Wiring issue on a 1965 Roadrunner Travel Trailer


Generic comments follow:

I'm not real clear on what you are asking ... I can almost guarantee you that you will not find a wiring diagram for your trailer.

Your travel trailer operates on 12 V DC. Your frig, the heater, all the lights, radio, all 12 volts. Your running lights should be getting power from the tow vehicle. While towing, the tow vehicle should be charging the battery. You may find some 110 volt lights inside, but probably not. To keep your battery charged, you have 110 Volt AC power coming in. Your frig may run on 110 V AC but it still needs 12 volts for control. Your Air Cond and Microwave and TV (if equipped) will al,so run on 110.

Regarding the three wires from the battery, there should be a battery charger close by your 12 Volt fuse panel. Even though the trailer is a "vehicle" dont depend on using the frame as a ground like you would in a car. So, that accounts for two of the three - a red or black and a white wire. There may be some dedicated line that the battery supplied to account for the third wire.

There should be a emergency breakaway switch on the front of the trailer. This is a switch with a pull pin. If the trailer breaks away, the pin is pulled out by the tow vehicle and the electric brakes should be automatiocally applied to stop the trailer. This switch should be powered, unfused, directly from the traailer battery and go directly to the electric brakes - presuming you have this feature.

Be aware, this trailer power supply was built and designed for a life style far different from that we enjoy today. If you have a 30 amp cord, as I suspect, 30 amps is enough to charge your battery, run your 12 volt items, run a TV and AC or TV and Micro or Micro and AC but not much else. As you are aware, you have two circuits built with #12 and they are probably protected with a 15 amp breaker though the #12 would be protected with 20 amp breaker in a house. The cord is only rated for 30 amps and it may be tired, unless you have replaced it.

I hope I have provided a little insight to your situation. If I can be of further assistance, please let me know.

a

Sep 20, 2009 | General Electric GE INDUSTRIAL SYSTEMS...

1 Answer

No 12V at Trailer Tow


you might search for a burnt fusible link that feeds that harness...try looking where the battery cable is connected to the starter motor underneath.sometimes you cant tell if a fuse wire is burnt...you gotta tug on it slightly...if it stretches like rubber,the wire inside is burnt/separated and designed to do so there instead of frying the whole harness

Jun 23, 2009 | 1998 Ford F150 Regular Cab

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