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Old 07-29-2016, 06:50 PM   #1
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Newmar headlight problem

Hello guys.My first ever post, so bear with me please I have a 98 dutch star that is having a weird head light issue. When you turn on lights, the low beams look like candles they are so week and yellow. It is impossible to drive when it starts to get dark. When you turn on the high beams, they burn very bright but every other outside light quits working. I'm talking running lights, tail lights,marker lights,everything! Comes back on when you hit the super dim low beams. Any help just pointing me in the right direction to even start looking to check would be greatly appreciated.
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Old 07-29-2016, 08:00 PM   #2
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Old 07-29-2016, 08:29 PM   #3
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Certainly is weird.

I'd start by checking the voltage either side of the low beam to ground. Then do the same on high beam. Sounds like a ground return problem but could be something else. Any significant voltage on the ground side of the low beam could be an indicator. Get some numbers to see where the voltage is going and then start tracing the circuit back to source and ground.
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Old 07-29-2016, 08:36 PM   #4
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Could be the actual headlight switch it is handling all the work with the headlights and all the other lights. These switches fail with the amount of load placed on them.



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Old 07-29-2016, 08:36 PM   #5
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Based on the information given in your post, the first thing I would do is find the ground connections for the lights and clean it so that a good connection is made. You might try running another wire from the lights to the frame or another good ground source and see if the lights start working properly. A loose or dirty ground connection can cause some strange things.

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Old 07-29-2016, 09:11 PM   #6
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This is good advice!


Quote:
Originally Posted by Geaux Tigers View Post
Based on the information given in your post, the first thing I would do is find the ground connections for the lights and clean it so that a good connection is made. You might try running another wire from the lights to the frame or another good ground source and see if the lights start working properly. A loose or dirty ground connection can cause some strange things.

-------- Jim
The vast majority of 12V issues are the result of a poor/missing ground. At times I've made my "temporary" ground permanent because I could not find the original ground wire problem.
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Old 07-30-2016, 07:18 AM   #7
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Quote:
Originally Posted by Ray,IN View Post
The vast majority of 12V issues are the result of a poor/missing ground. At times I've made my "temporary" ground permanent because I could not find the original ground wire problem.
Another vote for a bad ground connection. We modified our TT a lot and removed/abandoned the original ground wiring in most places. Things work well now.

Also, are the battery connections CLEAN? When we got our TT the interior 12VDC lights would dim when we turned more than one of them on. And, that was with shore power so we were pretty sure it wasn't a weak battery. It turns out the battery connections were dirty. A couple minutes of cleaning and properly attaching them and everything works fine now.
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Old 07-31-2016, 12:22 PM   #8
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Welcome to iRV2.

In Dutch Star motor homes of our vintage the , Dutch Star name was used on both gas and diesel chassis , being that you list 39' as your coaches length , I'm thinking diesel pusher, but that could be either a Freightliner or Spartan Chassis.
I've had to redo the front cap wiring on my F/L chassis due to headlight issues but my fix may not work on a Spartan chassis , so I'll have to ask.
Do you have a Spartan or Freightliner chassis?
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Old 07-31-2016, 12:26 PM   #9
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I am with Ray and Charles. Check the ground.
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