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Old 11-12-2019, 03:49 PM   #1
oddjobal
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12Volt problem

2012 295RK. When turning on any inside light, or awning switch my DC Voltage drops to 7.5 v. 2 lights and it is under 5v. Slides, stab. The entire 12v section up in the front compartment seems it be constant battery voltage. Battery has been checked. Switch panel has been checked for loose wires and every connection is tight. Disconnected (1 at a time) wires going to the fuse block. Removed each wire 1 at a time, turned on a light and watched the voltage drop. Hoping to find 1 circuit causing the problem. I am starting to think it may be the converter. I can not think of anything else that is common? Does any one know where they hide the converter. I am using clip on lights that work on 120v. I am open to suggestions. The lack of information from Keystone is surprising.
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Old 11-12-2019, 05:18 PM   #2
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Quote:
Originally Posted by oddjobal View Post
2012 295RK. When turning on any inside light, or awning switch my DC Voltage drops to 7.5 v. 2 lights and it is under 5v. Slides, stab. The entire 12v section up in the front compartment seems it be constant battery voltage. Battery has been checked. Switch panel has been checked for loose wires and every connection is tight. Disconnected (1 at a time) wires going to the fuse block. Removed each wire 1 at a time, turned on a light and watched the voltage drop. Hoping to find 1 circuit causing the problem. I am starting to think it may be the converter. I can not think of anything else that is common? Does any one know where they hide the converter. I am using clip on lights that work on 120v. I am open to suggestions. The lack of information from Keystone is surprising.
With ALL power disconnected, take the cover off the electric panel. Check all connections and make sure they are tight. Check all ground connections in the front compartment area.
Your converter is most likely built into the panel box.
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Old 11-12-2019, 06:38 PM   #3
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On my 2010 the converter was under the stairs.
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Old 11-12-2019, 06:57 PM   #4
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My converter is screwed to the bottom of the bathroom floor. To access, I remove the wall of the front pass thru storage area. It is hard to work on it there with pipes etc., but that’s where they put it for me.
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Old 11-12-2019, 08:45 PM   #5
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A loose or poor connection in your main power wire can cause a voltage drop like that. Good voltage until current starts to flow. But with current flow the resistance of the bad connection causes a voltage drop. And often overheating at that connection.
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Old 11-13-2019, 10:26 AM   #6
jcurtis934
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If you aren't seeing 13 plus volts on the battery, your converter is not charging the battery. Don't know how they wired your unit, but you may want to check the auto reset breaker in the front compartment that isn't used for the hydraulic pump. People sometimes think these are connection blocks, but if one is flakes it won't reliably pass 12v current to the rest of the circuits.
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Old 11-14-2019, 03:33 PM   #7
oddjobal
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all has been checked

Quote:
Originally Posted by beeje View Post
With ALL power disconnected, take the cover off the electric panel. Check all connections and make sure they are tight. Check all ground connections in the front compartment area.
Your converter is most likely built into the panel box.
Still have not found the converter/inverter. All wires and lugs tightened. Still the same. I will hunt for the converter. Everything works using the remote. including the awning. Have not tested the scare lights.
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Old 11-14-2019, 04:42 PM   #8
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Still have not found the converter/inverter. All wires and lugs tightened. Still the same. I will hunt for the converter. Everything works using the remote. including the awning. Have not tested the scare lights.
Ok, plan B. Turn on ALL 12 volt items in the camper you can find to create a big draw on the converter, lights/water pump etc. See if you can hear its fan kick on. Follow the sound. Just guessing
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Old 11-14-2019, 07:54 PM   #9
Carl n Susan
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They used to hide the converter in the wall behind the breaker/fuse panel in the bathroom on older 3400's. It can't be too far from the panel. Have you pulled the breaker/fuse panel out and explored behind it?
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Old 11-15-2019, 08:02 AM   #10
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Quote:
Originally Posted by Ohioken7 View Post
My converter is screwed to the bottom of the bathroom floor. To access, I remove the wall of the front pass thru storage area. It is hard to work on it there with pipes etc., but thatís where they put it for me.
My '17 305RL was screwed to the bathroom floor also. Double check the ground cable going to the frame. Mine was BARELY making contact. Measure the voltage at the battery and then unplug shore power and truck - check it again.
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Old 11-15-2019, 09:23 AM   #11
speedster100
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Likely the converter and it is likely behind the wall in the pass through front compartment. There is generally a 50amp fuse and on occasion they have been known to blow. I carry extra's and I've had to install them in others converters. I blew one once and started carrying them, haven't had that issue myself but have seen it a few times in the past few years. To test the theory hook up a 12 volt battery charger to the battery and see if the voltage still drops. It shouldn't...... The other issue Could be a manual reset circuit breaker is tripped on the power supply line from the converter... Just traced it down and fixed one for a neighbor in the RV park that is beside us last week. Small little reset was hidden behind the wires but with a multimeter I managed to trace it down and was in process of removing wire from the CB when I seen the little reset. Could only see 11 volts on the system when everything off, went to 7 volts when trying to run any 12volt equipment. Pushed the reset and away everything went. Why they didn't install an auto reset CB on that circuit is beyond me........ good luck
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Old 11-21-2019, 02:02 PM   #12
oddjobal
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12V problem

OK. #1. Thank you all for the great response. I pulled the fuse panel out. Tightened all the connectors and blocks.. On the DC side. I disconnected 1-12v wire at a time hoping that I might be able to isolate the problem. NOT. The converter/ inverter was not there. I did find it. It is under the bathroom behind the front compartment walls, behind the duct work, Not the easiest place to get to. I am sure it is not blown but there is a loose wire. I need to bench test it. I don't boondock, but I will fix the problem. I will add pictures for anyone to get a idea where it is located. Thanks again. I will post again
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Old 11-24-2019, 05:00 PM   #13
oddjobal
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12v problem

Behind the middle panel, under the bathroom, all the way in the rear is the converter. Remover the 2 tank heater vents. AC plug goes through the wall and plugs into the fuse panel. If you have short arms, it is hard. Isolated the converter and measured 4.3VDC output. I will not remove the old one. Just disconnected the +/- and ground. Have enough lead length to relocate. Fuses showed good. I posted a few pictures. This is not a fun job. The AC plug is plugged into the rear of the fuse panel and is a 120v20A plug. Modified a junction box to test this. I will put it back together after Thanksgiving and will post an update
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Old 12-04-2019, 10:14 AM   #14
MARK A
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Well, I see it was built before they quit using zip ties and semi-organized things. LOL
Hope you find your issue.



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