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Old 09-30-2015, 08:13 AM   #1
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Dim headlights - Fixed

There have been numerous threads in the past concerning poor/dim headlights. I wanted to share my solution.
In the past, people have blamed cheap headlight units from china, clouded lenses and inadequate wiring.
I replied to a thread back in December 2013 saying I had purchased a headlamp relay kit from Daniel Stern Lighting Consultancy and Supply
I installed it a couple of weeks later but haven't had the opportunity to test it as I don't normally travel in the dark.
Well, this morning, I had to take the coach for her annual oil change and although I live half a mile from the local Camping World, I just couldn't bring myself to go there so booked it in to a truck service place about 30 miles away. This meant leaving at 6am in the dark.

WOW! what a difference

Before, it was difficult to even tell the lights were on and main beam didn't improve it much. Now, I can see the road ahead and main beam illuminates half a mile or more ahead.

What their kit does is by-pass the inadequate (40ft) wiring and the headlight switch. In addition, when main beam is active, it keeps the low beam on as well.

In my case, I connected the power feed to a large half-inch 12-volt terminal in the front compartment.

As an aside, last year I also replaced the headlight switch to fix the dash lighting. That MAY have been contributing to the previous problem (no way to be sure).

I am VERY pleased with the results
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Old 09-30-2015, 09:59 AM   #2
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Good idea. I've ran across this when I was researching why my DRLs never turn off. The power for my headlights goes throu about 700 switches and relays and the voltage losses are probably substantial.

Looks like you just signed me up for another project on my Mirada
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Old 09-30-2015, 12:04 PM   #3
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Thanks !

We have done that on a few different cars in the past...
so far haven't researched it for the coach... may need to !

(replacing factory wiring with just a trigger circuit and coming straight from the battery)
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Old 09-30-2015, 03:45 PM   #4
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I did the same thing with my old Itasca last year. The voltage at the headlights with the engine running was about 11.6 volts. After the relay was installed, they measured 14.1. The light output was doubled according to a digital light meter.
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Old 09-30-2015, 03:55 PM   #5
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Wow. I never would have guessed it made that much difference.
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