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Old 07-28-2020, 02:41 AM   #1
Junior Member
Brand: Thor Motor Coach
Model: 25.2 Vegas
State: Washington
Posts: 7
THOR #19473
Angry Vegas Head Lights go out with Hi Beams

I'm fairly new at this Rv'n gig and love it. However, when I turn on my hi beams my regular head lights go out. When I turn off my Hi beams my regular head lights come back on. I reached out to my local Thor RV dealer about this and they said "its a Ford issue". I then reached out to Thor Tech support and they stated its suppose to do that. WHAT???.
Now, again I'm new but shouldn't the premise be brighter lights means both teh regular head lights AND Hi beams together create better night time illumination just like your regular vehicles??. Please do share...

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Old 07-28-2020, 02:47 AM   #2
Senior Member
Brand: Thor Motor Coach
Model: Hurricane 34J
State: Iowa
Posts: 111
THOR #15642
Pretty common with some vehicles.

I modified a relay harness and some splitters so that the low beams stay on.

Basically a harness I created for a Subaru vehicle we specialize in.
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Old 07-28-2020, 02:57 AM   #3
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ducksface's Avatar
Brand: Thor Motor Coach
Model: 2018 24.1 AXISSIXxSIX
State: Arizona
Posts: 5,218
THOR #13932
I've done the same 'all on' harness on s10's.
I added a light bar to my rv instead of messing with the 5 or 10v backwash voltage and computer crap I might have ran into with the '4 lights on' dongle.

What is happening is the way headlights work, almost always.
Except for older 5 inch round headlight cars and some of the early 4 small square lights I think what you are describing has been standard for many many years.

The hidden light bar wiring instructions is somewhere in my signature thread.
Splitters are available on ebay. You'll need to know h9 from h11 etc.

You will also notice your fog lights won't come on with your bright lights and your(mine) running lights won't come on with your dims.
Below is a link to most of my modifications either accomplished or pending.

Click on my pictures then click the pop-up for a full screen zoomable picture.
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Old 07-28-2020, 01:15 PM   #4
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Brand: Entegra
Model: Accolade 37TS
State: South Carolina
Posts: 7,302
THOR #1469
Duplicate post in another thread has been deleted

The duplicate thread in another area by the OP has been deleted. This thread will remain open.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
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Old 07-28-2020, 01:28 PM   #5
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Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,089
THOR #8860
The operation of your headlights is normal, and to be expected.
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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