Major Electrical Problem - BMW Luxury Touring Community
 
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post #1 of 10 Old Apr 29th, 2008, 3:08 pm Thread Starter
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Exclamation Major Electrical Problem

I recently installed a brand new pair of PIAA lights onto my 99 LT. The lights are hard wired, along with the supplied relay, to the battery terminal. The ground to the supplied switch is hard wired to the battery terminal, and the power line is welded to the tail light bulb blade connector. Everything works fine.

However, this weekend, while riding from Detroit to Atlantic City, on three occasions ALL electrical power shut off ... no lights, no engine, not even the LED clock when I came to a complete stop at a toll booth after several hours of highway speed. After checking all fuses and battery terminals, I tapped the PIAA relay and the power returned. The bike started and ran perfectly through numerous similar starts and stops at both highway and city speeds. The problem is intermittent.

Has anyone had a similar experience? My thinking is to relocate the relay which is currently zip tied next to other wires to top of the battery. I believe the battery itself is okay, but may be the culprit although I can't imagine why.

Charlie
99 K1200LT
85 R80RT
81 R100RS (Sold it 4/10)
03 Moto Guzzi V11 LeMans
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post #2 of 10 Old Apr 29th, 2008, 7:03 pm
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Re: Major Electrical Problem

Working on my own electrical problems at the moment. What I found, was a severed wire under the seat that provided power to my relay for my Motolights, which were installed by the dealer when we got this 99LT, last nov.

With the nest of after market items others added before me, I separated the relays, and put a layer of flat roofing rubber on top of the battery, cut out and snugged around the terminals and wires, to eliminate vibration and any possible electrical shorting.

I also found the rubber bumpers under the battery were badly deteriorated. I took off what I could, then glued five strips of HD rubber tie down straps for the battery to sit on. Worked great.

More than that would seem to suggest it could be a problem with the relay.

Hope that helps.... ;^/
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post #3 of 10 Old Apr 29th, 2008, 10:10 pm
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Re: Major Electrical Problem

My bet is the relay is not your problem. Check your main chassis ground for being loose.

Brian Ley
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post #4 of 10 Old Apr 30th, 2008, 8:03 am Thread Starter
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Re: Major Electrical Problem

For what it's worth, PIAA tells me the unit is under full warranty and that I should return it to the dealer for replacement. I sure hope I don't have to go through all of that pain. I asked the service people at A&S where I bought the unit, on line, if they have any suggestions. So far, no response.

Charlie
99 K1200LT
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81 R100RS (Sold it 4/10)
03 Moto Guzzi V11 LeMans
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post #5 of 10 Old Apr 30th, 2008, 8:33 am
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Re: Major Electrical Problem

Charlie... From what you describe, I don't think this is caused by the PIAA's... unless, somehow, all the power for the bike is being run through the PIAA... which I don't think is possible without causing other issues.

So, may I suggest you check all the connections on your battery first? I've seen "dirty" connections cause some really wierd problems...

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post #6 of 10 Old Apr 30th, 2008, 8:38 am Thread Starter
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Re: Major Electrical Problem

Yeah, thanks. I was going down that road, too, which is why I suspected a battery problem. It is indeed time for some dialectic grease me thinks.

Charlie
99 K1200LT
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81 R100RS (Sold it 4/10)
03 Moto Guzzi V11 LeMans
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post #7 of 10 Old Apr 30th, 2008, 9:54 am
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Re: Major Electrical Problem

Quote:
Originally Posted by BMWCharlie
Yeah, thanks. I was going down that road, too, which is why I suspected a battery problem. It is indeed time for some dialectic grease me thinks.
I'm headed to A&S this morning... You want me to tell them you need input??? I can shake a tree or two over there...

Actually, this does sound like a loose connection at the source (battery). While I have never had the same problem, I headed any of those types of headaches off at the pass and installed a Blue Sea fuse block. Now the battery has three positive connectors and two negative connectors. Everything else goes thru the add-on fuse block.

Uncle Mark

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post #8 of 10 Old Apr 30th, 2008, 9:59 am Thread Starter
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Re: Major Electrical Problem

I appreciate any help I can get. I did email the "service department" at A&S last night via their website, giving them essentially the same information I posted here. No response as of 11:00 a.m. EDT. Thanks a lot.

Charlie
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81 R100RS (Sold it 4/10)
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post #9 of 10 Old Apr 30th, 2008, 10:28 am
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Re: Major Electrical Problem

Your thought on the battery might be real valid. If you have a loose plate, it could sporadically ground causing instant electrical death.

Electricity. A true love, hate relationship.



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post #10 of 10 Old Apr 30th, 2008, 11:22 am
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Re: Major Electrical Problem

Quote:
Originally Posted by BMWCharlie
I appreciate any help I can get. I did email the "service department" at A&S last night via their website, giving them essentially the same information I posted here. No response as of 11:00 a.m. EDT. Thanks a lot.
We don't open until Noon Eastern time. I will mention to our service manager to check the emails. Sounds like you have a battery connection problem.

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