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Old 10-07-2015, 08:36 PM   #1
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Let's talk headlights trouble

I have had issues with the headlights on my 2004 Seabreeze (F-53). I have daytime running lights so the headlights are on any time the motorhome is running, problem is that I have low voltage even when I turn the headlights on, and they are not bright enough for driving at night, so I constantly have to run with brights on. I took this problem to my local shop who agrees with what I have read on here, likely a bad ground. I wonder where the ground issue could be, I know in my boat there is a ground bus (bar) where wires terminate. I am not sure how to check for ground on here, and shop told me he could start to trace back in wiring but would be $105 per hour.

Wonder why I just can't run new ground wire from the two headlights to the ground post on the battery? Seems if the ground is the problem this would be an easy solution.

What do you all think.
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Old 10-08-2015, 06:43 AM   #2
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Here is your easiest check and likely where the problem is. Find the "MAIN" battery ground (battery negative) to chassis near the house battery bank. Remove, clean, grind, brush and sand to bright metal and reassemble using a little "conductive" grease on all surfaces. I bet this fixes your headlight problem and "improves" ALL 12VDC operations. Rook
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Old 10-08-2015, 06:50 AM   #3
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Quote:
Originally Posted by Rook View Post
Here is your easiest check and likely where the problem is. Find the "MAIN" battery ground (battery negative) to chassis near the house battery bank. Remove, clean, grind, brush and sand to bright metal and reassemble using a little "conductive" grease on all surfaces. I bet this fixes your headlight problem and "improves" ALL 12VDC operations. Rook
Gonna give that a try. Thanks
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Old 10-08-2015, 09:54 AM   #4
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Quote:
Originally Posted by trode View Post
I have had issues with the headlights on my 2004 Seabreeze (F-53). I have daytime running lights so the headlights are on any time the motorhome is running, problem is that I have low voltage even when I turn the headlights on, and they are not bright enough for driving at night, so I constantly have to run with brights on. I took this problem to my local shop who agrees with what I have read on here, likely a bad ground. I wonder where the ground issue could be, I know in my boat there is a ground bus (bar) where wires terminate. I am not sure how to check for ground on here, and shop told me he could start to trace back in wiring but would be $105 per hour.

Wonder why I just can't run new ground wire from the two headlights to the ground post on the battery? Seems if the ground is the problem this would be an easy solution.

What do you all think.
Where is your battery located. On my DP, it's near the rear with probably 35-40 feet of (thin) wire plus a headlight switch and multi-function switch between that and the headlights.

See my solution here:

http://www.irv2.com/forums/f258/dim-...ed-265118.html

If your battery is in the front near the headlights, probably not the same problem but could still be bad switch(es).
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Old 10-08-2015, 10:20 AM   #5
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Some DRLs worked by putting the two lights in series, giving about 1/3 of their normal brightness. The were switched to parallel when the light switch was move to "headlights".
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Old 10-08-2015, 10:32 AM   #6
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Gonna give that a try. Thanks
This is actually a well discussed problem. If you measure the voltage across the filaments, you would see around 10V.

I have attached a schematic of how to add a relay while still keeping the DRL feature. Increasing the ground wire gauge is also helpful.

Regards,

Dan
Attached Files
File Type: pdf Fleetwood Headlight modification.pdf (29.9 KB, 37 views)
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