Exterior light question

I’ve never noticed ‘‘this before.  We haven’t camped this year, but have the camper in the driveway, where my wife loves to go and read.  I had the camper plugged to shore power.  This evening I unplugged.  We have our battery disconnect inside, to the left of the bathroom.  That switch I put in 2-3 years ago, following a mod I found here. I turned that switch off too.  We noticed that the back red lights outside are still lit.  Any ideas?  Did I miss something?


Terry & Jody...  2016 Dodge Ram 1500
2016 NuCamp 320 [email protected] Max S
[email protected]  Road   
Appleton,  WI





Comments

  • TerryV6TerryV6 Member Posts: 1,066
    Those red lights.  Aren’t they running lights that are lit when connected to the TV.?  Could it be a dirty 7 pin connector or something?
    Terry & Jody...  2016 Dodge Ram 1500
    2016 NuCamp 320 [email protected] Max S
    [email protected]  Road   
    Appleton,  WI





  • N7SHG_HamN7SHG_Ham Member Posts: 823
    Those lights should have zero connection to the trailer battery/shore supply. So, somehow there is power reaching the outside lights, I have seen bad grounds cause this, it isn't magic, but it may be hard to track down the electrical path. I would start at the light itself and make sure the wiring is clean and tight.
    2019 [email protected] 400 Boondock Lite
  • ScottGScottG Moderator Posts: 3,506
    Were all four of the marker lights on, or just that one? Is it as bright as when you are connected to the tow vehicle? Did it go out eventually?
  • ontheroadontheroad Member Posts: 183
    Previously on our [email protected] we had some water get into the  7 pin connector..it lit up a tail light..only one side though...got it cleaned out and it was nice and dark...now we cover the connector
  • TerryV6TerryV6 Member Posts: 1,066
    Scott, we just noticed it last night.  It is the two lights in back.   We only connected to TV in March to bring her home to prepare for a season that hasn’t happened. This isn’t a political statement, but my wife was in healthcare for 40 years and knows and has seen a lot, so we don’t dismiss the present situation.  
     Anyway, I’m going out after coffee here and see what’s what with my connector, as per previous suggestions here.  We’ve had tons of rain.
    Terry & Jody...  2016 Dodge Ram 1500
    2016 NuCamp 320 [email protected] Max S
    [email protected]  Road   
    Appleton,  WI





  • BrianZBrianZ Member Posts: 1,082
    I'm wondering how you leave your 7-way plug when not in use.  We've never used a cover for ours, but I do try to make a point of leaving a short length with plug hanging straight down for drainage.  We've never used a cover & never had an issue, though we're probably overdue for cleaning the contacts & applying some dielectric grease.

    -Brian in Chester, Virginia
    TV: 2005 Toyota Sienna LE (3.3L V6)
    RV: 2018 [email protected] 320S, >70 mods 
  • BaylissBayliss Member Posts: 515
    @TerryV6, I think you can keep the cover (or purchase a new/better one.)  Just keep the plug pointed up, which is what I do when it is covered (down when not covered.)
    2019 [email protected] 320 S Boondock Lite; Alde Compact 3020 Boiler; 2007 Toyota Tundra TRD (5.7L V8)
    Greg & Marlene (Tucson, AZ)


  • falcon1970falcon1970 Member Posts: 508
    I agree with Bayliss.  Keep the cover but point it up.  This is my solution to containing all the attachments;

      
  • TampakayakerTampakayaker Member Posts: 109
    I have ours tucked into the propane/battery tub.
    2006 RAM 1500 4 door, 2016 [email protected] 320 MAX S 
    Tampa FL
  • BaylissBayliss Member Posts: 515
    edited May 25
    Does anyone have a theory as to why only the rear end side-marker/running lights (if I am correct about that) on @TerryV6's trailer illuminated under the circumstances he described?

    Although I initially suspected water on the 7-pin plug, the description of only those two lights being illuminated threw me off.  That circuit should control all four side-marker/running lights (i.e., front and rear sides), the license plate light, and both of the tail lights.  Although there is only one wire for those lights from the 7-pin plug, if you trace the connections from the junction box at the front of the trailer, there are two wires leading to those lights, presumably one wire to each side of the trailer.  See the junction box diagram below for a 2019 [email protected] 320 S - - I am referring to terminal #3 with the green wires.)

    So, why wouldn't ALL the lights on that circuit illuminate under the described conditions?  Just curious.


    2019 [email protected] 320 S Boondock Lite; Alde Compact 3020 Boiler; 2007 Toyota Tundra TRD (5.7L V8)
    Greg & Marlene (Tucson, AZ)


  • SeaLaVieSeaLaVie Member Posts: 24
    I have this little attachment and really like it. https://www.amazon.com/dp/B01MFFC0IU
  • BrianZBrianZ Member Posts: 1,082
    @Bayliss, maybe those lights had the lowest power requirement?
    -Brian in Chester, Virginia
    TV: 2005 Toyota Sienna LE (3.3L V6)
    RV: 2018 [email protected] 320S, >70 mods 
  • BaylissBayliss Member Posts: 515
    Possible, I suppose, @BrianZ.  I am not familiar with something like that occurring.  It is really hard to say without knowing exactly how the wires are routed.  You would think that the first light on the circuit would pull the power if it was a low power situation.  I believe that the two green wires from the junction box send power separately to lights on each side and rear of the trailer.  Presumably, the first connections would be at the front side markers, but ya never know.  It is definitely a head-scratcher.  I tried searching online for a possible answer, but no luck so far.
    2019 [email protected] 320 S Boondock Lite; Alde Compact 3020 Boiler; 2007 Toyota Tundra TRD (5.7L V8)
    Greg & Marlene (Tucson, AZ)


  • ChanWChanW Member Posts: 2,622
    edited May 26
    Good question!
    I think with LEDs, all conventional wisdom might go by the wayside...
    Maybe there's a minimum voltage requirement for some of them before they 'fire'?
    Just a guess...
    Bayliss said:
    Possible, I suppose, @BrianZ.  I am not familiar with something like that occurring.  It is really hard to say without knowing exactly how the wires are routed.  You would think that the first light on the circuit would pull the power if it was a low power situation.  I believe that the two green wires from the junction box send power separately to lights on each side and rear of the trailer.  Presumably, the first connections would be at the front side markers, but ya never know.  It is definitely a head-scratcher.  I tried searching online for a possible answer, but no luck so far.


    Chan  -  Buffalo NY (Beau Fleuve)
    2014 S Maxx - 2011 Tacoma 4cyl
     
     [email protected]'ll_Do_Ya
  • Michigan_MikeMichigan_Mike Administrator Posts: 2,589
    I’ve seen this phenomenon happen for many years now.  The issue with LED lights are that they require minimal voltage and they are sensitive and will power up.  And as noted above, grounds will create issues on occasion with LED lights too.  If voltage somehow is back-fed or leaks into a ground it will create a similar problem.  This is why the battery gets drained too via LED circuits as although they require minimal voltage, their is a constant drain on the trailer battery through LED circuits, DVD/TV, other devices, etc.  

    I always just flop the trailer power cord downward to eliminate this issue and and condensation created.  I noticed the condition above about 10 years ago when I swapped out incandescent trailer lights with LED lights and attributed it to a grounding issue on my 4-wide Little Guy.  
    Mike Smith 
    Linden, Mi
    2019 [email protected] 400
  • BrianZBrianZ Member Posts: 1,082
    edited May 26
    @Michigan_Mike, a ground issue sounds more plausible in @TerryV6 's case now that I reread his original description.  I was thinking that the green wire being next to the 12V inside the plug would make it easy to get a short via water inside the plug from the power lead going back to the taillights.  However, this would only be true if the battery switch was turned on to supply power to the cord via the distribution box panel; but @TerryV6 said the battery switch had been turned off when the light was on.  Could there be an issue with the battery switch wiring perhaps?  Some further wiring troubleshooting may be needed.  Maybe take another look at the battery switch wiring?  I'm wondering how that was done.

    PS:
    I just tested our plug by inserting a U-shaped piece of 14 AWG wire between the 12V (11 o'clock) and Taillights (1 o'clock) contacts inside the plug, with battery switch on & trailer unplugged from ac power.  All six running lights lit up (small front & rear side lights, plus the two large round taillights at rear).  With battery switch off, none were lit.
    -Brian in Chester, Virginia
    TV: 2005 Toyota Sienna LE (3.3L V6)
    RV: 2018 [email protected] 320S, >70 mods 
Sign In or Register to comment.