LED's dim on Dutch Star

[ARFFMAN]

I have a 2004 DSDP and while in campsite, connected to 50 amp pedestal, (Checked, at wall receptacle, 122.6 volts) The front driver side slide ceiling lights, don't work and also the wall side sconces are very dim. The bedroom ceiling lights above bed are also very dim. Both slides are roadside where all lights that are dim.
I'm at a different campground now and experiencing the same problems.
I haven't checked voltage at ceiling lights and I'm sure they have low voltage.
I understand that these lights are 12 volts so I'm thinking bad grounds. I'm confused because 3 separate lights are not working or dim on same side slide. Checked fuses and are not bad. Everything on DS works fine, both A/C's, , all other led's, I'm reaching out to everybody and seeing if anyone has experienced this problem.

[barnegatepic]

What is your coach batteries reading for voltage? Sounds like your 12 volt system is low or not charging.

[tom chelbana]

On your dim LED lights it like a bad ground.

[ARFFMAN]

Last night all the lights started working , full brightness, I too expect bad ground, No I need to trace wiring and look for grounds.

[tom chelbana]

You could also add a ground to the negative wire to headlight plug in.

[ARFFMAN]

Ceiling lights have been working fine now for 2 days, Work on problem when I get home.