2005 low beam failure - BMW Luxury Touring Community
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post #1 of 2 Old Apr 5th, 2017, 9:18 am Thread Starter
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Join Date: Jan 2003
Location: Sioux City, IA, USA
Posts: 129
2005 low beam failure

Recently the low beam HID failed on my 2005LT. The igniter had failed when bench tested. The replacement unit did not start when installed. Turns out there is no power to the low beam circuit (green w/ blue tracer) as the left and right side markers do not light either. I have power thru the #5 fuse and the tail light is on.
High beam works fine and drops out when starting. Strangely the tail light does not go out when cranking.

Any ideas on where to start looking?

Thinking that I may have to pull the tank and have a look in the wiring box.


Chuck Swenson,
Sioux City, IA
2010 R1200RT Low with ESA2!
2005 LT
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post #2 of 2 Old Apr 5th, 2017, 8:52 pm
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Join Date: May 2004
Location: Hazel Green, AL, USA
Posts: 13,350
Re: 2005 low beam failure

I'm stuck as the load shed relay feeds F5 (low beam and tail) as well as F6 (high beam). I would at least follow the wire back from the after market ballast and check where is goes from the original bulb connector to the feed through connector on the headlight assembly. From there it goes to some tie point somewhere. The tail lights should be going out so I suspect that the failed ballast may have drawn excessive current and melted wires together.

2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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