Electrical Issues/‘21 2910BH

[Yoda]

Obrracing -- an example of a wiring issue causing a problem is documented here: https://gdrvowners.com/forum/operati...-inop-easy-fix

For clarification, what's apparently happening in the circuit is there's an intermittent open, or as TedS put it, a break in the circuit. If there was a short the fuse would blow.

Since so many different circuits are affected, my suspicion is there's a group of -12v return ("ground") wires causing the issue (similar to what was shown in the linked thread above).

TedS -- I'd never considered the fuse light being inoperative if there is a break in that fuse's circuit. Now that I think about it, that explains why all the slots without fuses don't have their LED lit. (Thanks for the post.)

Howard

Obrracing

Thanks to Howard mentioning a group of 12V wires being intermittent I had a brainstorm. I am not sure where you trailer is chassis grounded (wire tied to frame), but on my Reflection a whole bunch of ground wires was buried in a big blue nut with just one ground wire coming out. The nut had several wires that were loose inside.

This is the blue wire nut I am referring to. It was buried in the black foam sealant. You can see one white wire runing back out the top to the left. It went to a screw on the frame.


A better view of the GD grounding lug which is way undersized for all the wires connected to it.

My fix was to attach each wire to the grounding bar I installed

Each grounding wire to it own tap.

This was a separate grounding connection that the ones in the distribution panel in my 5th wheel. I am not sure where it would be located on your trailer - it could be in the belly or near the battery connection point on the front of your trailer.

Just a thought here - just look for a large wire nut.

Hope this helps
Keith

[Jlawles2]

If you do not want to fabricate a bus bar as Keith did, there are options available. https://www.amazon.com/Mofeez-Screw-...0599846&sr=8-3 is what I used when cleaning up the grounds on my rig.

[Obrracing]

Obrracing

Thanks to Howard mentioning a group of 12V wires being intermittent I had a brainstorm. I am not sure where you trailer is chassis grounded (wire tied to frame), but on my Reflection a whole bunch of ground wires was buried in a big blue nut with just one ground wire coming out. The nut had several wires that were loose inside.

This is the blue wire nut I am referring to. It was buried in the black foam sealant. You can see one white wire runing back out the top to the left. It went to a screw on the frame.


A better view of the GD grounding lug which is way undersized for all the wires connected to it.

My fix was to attach each wire to the grounding bar I installed

Each grounding wire to it own tap.

This was a separate grounding connection that the ones in the distribution panel in my 5th wheel. I am not sure where it would be located on your trailer - it could be in the belly or near the battery connection point on the front of your trailer.

Just a thought here - just look for a large wire nut.

Hope this helps
Keith

Keith,

I remember seeing something similar under my rig. There was also like a silver electrical connection box. Most of the wires outside of it that I recall looked good to go, but I will check more thoroughly when I’m able to bring the rig back home. I do not remember a bunch of black gunk insulating anything. I think I remember being able to see everything, except for some stuff that may have been in the black protection plastic if you will, running under the chassis, up into the rig.

you all have been amazing with the inputs/help.

Charlie

[Obrracing]

If you do not want to fabricate a bus bar as Keith did, there are options available. https://www.amazon.com/Mofeez-Screw-...0599846&sr=8-3 is what I used when cleaning up the grounds on my rig.

Thanks! If what I find with my limited skills is a mess like Keith says, I will have to look into this.

Charlie

[Yoda]

If you do not want to fabricate a bus bar as Keith did, there are options available. https://www.amazon.com/Mofeez-Screw-...0599846&sr=8-3 is what I used when cleaning up the grounds on my rig.

Funny - I made that on the spur of the moment using a scrap piece of bar stock I had left over when I realized I needed a separate ground location for the multiplus. I drilled and taped it for the large bolt and lug nut (4/0 connection) and for the white ground wires drilled the holes and used self tapping stainless steel screws and star washers. With the bus bar you linked he will need to remember to run a heavy ground wire to the frame from one of the posts for the negative one. Good solution though.
Keith

[Yoda]

Keith,

I remember seeing something similar under my rig. There was also like a silver electrical connection box. Most of the wires outside of it that I recall looked good to go, but I will check more thoroughly when I’m able to bring the rig back home. I do not remember a bunch of black gunk insulating anything. I think I remember being able to see everything, except for some stuff that may have been in the black protection plastic if you will, running under the chassis, up into the rig.

you all have been amazing with the inputs/help.

Charlie

Charlie
The black gunk foam sealed the hole where the wiring passed from my front bay (I have a 5th wheel). You probably don't have that on your TT, but Ill bet a cup of coffee you have the big wire nut somewhere - possibly inside the silver electrical box you mention. When looking there check for any loose connections and grounds. They may look good, but might be loose inside.

Please post back what you find.
Keith

[Obrracing]

Keith,

I will! I hope to soon…and will definitely keep this thread updated…

Charlie

[Obrracing]

Thought I would let everyone know I finally got my appointment and the trailer is in the shop. But, there are 43!!!!!! Trailers ahead of me! May be a bit, but I will post what they say. Charlie

[Obrracing]

Update! After three months at the dealer, they finally are going to start and it appears the dealer is going to just rewire the bathroom lights/fan, master bedroom lights and awning lights. I mentioned looking for the master ground connections, but I think they believe these things are too big of a mess (of wires) when you start taking things a part. They got approval from GD to do it. I said as long as everything works, doesn’t look like crap and doesn’t catch on fire!!!!! I should be good. If I wasn’t afraid, I would have checked my master silver/gray electrical box under the frame by the front of the trailer. I may still try to take that apart when I get it back and check things. Maybe they will too when they actually rewire.