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12-06-2018, 03:03 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: 2014 Hurricane 34E
State: Alabama
Posts: 286
THOR #6181
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12v lights flicker thru out coach, no matter shore or generator
Just curious, sometimes my 12 v lighting will start flickering. Drives us nuts. Sometimes stops if switched to store while hooked to shore or generator running. I assume something getting ready to fail but don't need it to on the road!!!
Ideas??? Thx Dennis.
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12-06-2018, 08:34 PM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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I been watching this tread waiting for some good answers. You have me thinking about it as well.
Maybe the battery connections? Or some other loose wire on the 12v system up to the fuse box? Check the connectons at the fuse panel.... many of mine were loose (AC side as well as DC side).
How old are your batteries?
Are the lights intermidiately flickering or is it consistent? Move around the battery connections (Pos and Neg) and see if that affect the flickering at all.
I will have to think about this one.
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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12-06-2018, 08:41 PM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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Sounds like a ground somewhere...check the leads at and from the converter to the battery. Also, if you can see the back side of the 12V panel, check all those wires as well. It has to be in one of those three places...converter, fuse panel connections or the battery terminals.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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12-06-2018, 09:53 PM
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#4
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Axis/Vegas Enthusiast
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,837
THOR #1150
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2nd vote for loose ground somewhere.
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12-06-2018, 10:24 PM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: Chateau 31L
State: Florida
Posts: 2,063
THOR #12189
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Quote:
Originally Posted by JamieGeek
2nd vote for loose ground somewhere.
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Make that 3. Try this (it's a reach). A bad ground will show itself by 'disturbance'. Park the rig. Do what you do. Jump up and down or move enough - somewhat. If the lights flicker, start with Mr. Gritz and come back here.
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12-06-2018, 10:30 PM
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#6
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Senior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 2,585
THOR #4735
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I think it could either be 'ground' related(loose or 'iffy' connection), or a/some battery cells failing... mine exhibited this behaviour recently when I went to turn on the inverter, or add a large load to it - the 12v lights would flicker...
my #4 6v House battery has two bad cells.
I tested my theory by using the AUX battery boost button WHILE turning on the Inverter, or adding a large load - no problems with the additional batteries.
I then removed the 'bad' battery, wired two of the good batteries in Series, to create a 12v battery bank, and then tested again by turning on the Inverter, then applying the fridge compressor, microwave, and even a vacuum ALL AT THE SAME TIME... the inverter stayed on, the 12v lights did not flicker.
bad battery, or cells. : )
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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12-06-2018, 11:44 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: Miramar 34.4
State: Iowa
Posts: 794
THOR #4488
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When you say flickering do you mean on and off or justing dimming and then back to full? Mine use to dim and bright, back and forth. I found it to be a loose fuse below the bed. I opened the 12 volt fuse panel and pressed firmly on all the fuses and discovered a couple weren't properly seated...problem solved.
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12-07-2018, 06:41 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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Good to know this stuff. That way down the road I know what to look at first on my RV if im having simular problems.
__________________
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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12-08-2018, 03:03 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: 2014 Hurricane 34E
State: Alabama
Posts: 286
THOR #6181
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Quote:
Originally Posted by Miramar Owner
When you say flickering do you mean on and off or justing dimming and then back to full? Mine use to dim and bright, back and forth. I found it to be a loose fuse below the bed. I opened the 12 volt fuse panel and pressed firmly on all the fuses and discovered a couple weren't properly seated...problem solved.
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The lights go dim and bright. Thx, Dennis.
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12-08-2018, 03:03 PM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: 2014 Hurricane 34E
State: Alabama
Posts: 286
THOR #6181
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Good places to start looking and checking. Thx everyone, Dennis.
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12-08-2018, 07:41 PM
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#11
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,324
THOR #6903
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Had this happen once and it turned out to be a corroded battery terminal that looked fine until it was removed.
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12-11-2018, 06:54 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: Quantum 31WS
State: Arizona
Posts: 121
THOR #7419
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We have a similar problem on our Quantum WS31, though it's only two sets of the 12 V lights. The 12V lights over the Galley work just fine if they are the on except when we also turn on the lights over the dinette. Then both sets of lights will start to flicker after being on for a while. If we turn off the dinette lights the flickering on the Galley stops. 've looked for loose connections on either switch but find non issues. Any thoughts?
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12-11-2018, 07:05 PM
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#13
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Moderator Emeritus
Brand: Crossroads
State: Wisconsin
Posts: 669
THOR #124
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Maybe check the converter.
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12-11-2018, 07:28 PM
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#14
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Senior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 2,585
THOR #4735
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battery power seems to be the issue, either overall low battery Voltage levels, a cell or cells within a battery having 'specific gravity' low readings, or a loose/corroded battery cable...
voltage can drop and cause flickering, etc., even when it seems sometimes that other things work fine - but add the additional load and it shows you that it's struggling.
__________________
the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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12-11-2018, 07:37 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Quantum 31WS
State: Arizona
Posts: 121
THOR #7419
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In our case, we replaced the Stock Converter with a Progressive unit, more positive charging. Also replaced the Stock Batteries with Trojans 4 months ago, properly watered and charged. Our flickering inly happens on these two lights in the MH. no matter what else is on. Seems somehow to be limited to these two circuits, so don't think overall voltage of battery terminal corrosion or tightness is the issue.
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12-11-2018, 07:55 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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Then it must be a loose wire or a back light switch. Also check connection at the fuse box. My 12v POS was not very tight and several screw were loose that secure 12 v and 120 v wires.
__________________
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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12-16-2018, 03:39 AM
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#17
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Junior Member
Brand: Thor Motor Coach
State: Oklahoma
Posts: 27
THOR #12540
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I’ve experienced that too
Check your converter, I had the same problem once and the RV Tech said that was classic converter symptoms, had it replaced and no problem since
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12-28-2018, 04:44 AM
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#18
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Junior Member
Brand: Thor Motor Coach
Model: Freedom Elite 30 FE
State: Texas
Posts: 6
THOR #12021
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Having a simular problem in a freedom elite fe30, but only the 4 lights in the main living area -bath, hall, and bedroom lights all fine. All the fuses seem fine, so we are thinking it is a poor connection somewhere?
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AgileCorgis
Pleasant Valley, Texas
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12-29-2018, 01:23 AM
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#19
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Junior Member
Brand: Thor Motor Coach
State: Ontario
Posts: 10
THOR #2111
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If your lights flicker it usually means you have a poor connection somewhere. remember it takes very little voltage to turn on a LED lamp ( .7volts for a single LED element) so any slight imperfection and you get issues.
If you can get some antioxidant spray and apply it to ALL connections and then tighten the connections, you have a better chance.
If you have replaced your old incandescent lamps with new energy efficient LED lamps this is a classic case of what can happen.
Never change external lamps (markers lights, brake lamps or headlamps etc) with LEDs in old incandescent fixtures without applying antioxidant spray, if possible replace the entire fixture for a LED one.
This also applies to grounds connections too not just positive wires.
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01-06-2019, 02:24 AM
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#20
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Junior Member
Brand: Thor Motor Coach
Model: Freedom Elite 30 FE
State: Texas
Posts: 6
THOR #12021
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After some troubleshooting, it seems we either have a cracked circuit board or maybe a cold solder joint on the circuit card that also holds the fuses. Any pressure or movement on the connection for the 12v lights on that board causes the lights to flicker. Also once we had the cover off we noticed the fan on the power converter also was not running when the lights flickered. Cancelled another trip in the RV... we are still under an alleged warranty, but trying to get work done under warranty is next to impossible! Hopefully we can repair it ourselves.
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AgileCorgis
Pleasant Valley, Texas
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