how to hook up a trayler wireing on my k1200 lt 2005 - BMW Luxury Touring Community
 
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post #1 of 7 Old Feb 10th, 2008, 3:20 pm Thread Starter
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how to hook up a trayler wireing on my k1200 lt 2005

I want to buy a new trailer so i need a trailer hitch and the shop who would install the hitch say he wont look at the wiring cause i have abs brake.
how could i do it myself.
please help me
i love my k200 LT
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post #2 of 7 Old Feb 10th, 2008, 3:58 pm
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once you get the hitch, there are a lot of people on here who will be happy to help you get the wiring taken care of. Just remember, DO NOT use the center bulb on the tail light of the bike. You have the right and left brake bulbs and the right and left turn signals to wire, and depending on the wire harness a pos and neg wire to the battery
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post #3 of 7 Old Feb 10th, 2008, 5:54 pm
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The LT has some very sophisticated electronics, ABS is just one of them.

What you need is an isolator relay, this is very cheap insurance that will prevent a short perhaps in the trailer wiring or the connector from taking out the LT electronics, which would cost mega-bucks.

In the States these are available from Bushtec or Dauntless (both trailer manufacturers)

They're probably available for cars also but I don't know anything about that.


If you need more information type Isolater relay into the search box.


Hans
St. Petersburg FL

2002 K1200LTE
"Silver Buffalo" Totaled 5/06
2005 LT
"Esperanza"
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post #4 of 7 Old Feb 19th, 2008, 9:12 pm
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Re: how to hook up a trayler wireing on my k1200 lt 2005

I just ordered my trailer ( time out trailer dart model) and plan on using the dauntless hitch, I talked to the dauntless people and they say the full instuctions on how to wire it up are included?

Can anyone tell the curious or possibly have some pictures of how its done ? where do you tie into the bikes power for the lights ?
Thanks
Glen
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post #5 of 7 Old Feb 19th, 2008, 11:59 pm
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Re: how to hook up a trayler wireing on my k1200 lt 2005

The relay you are looking for is called an Isolation Relay or in other words a Current Sensing Relay. This is a solid state device and it typically gets its power from the battery. There are three sides to the relay:

1. Battery - usually a black and red wire - hot and ground with fuse
2. Wires that go to your tail lights on the back of the bike - these are attached directly to your wiring. These wires only sense current and tell the solid state relay that the bulbs are either drawing current (on) or not (off).
3. Current carrying wires that go the trailer lights - running, turn signals and brake light.

Thus when you turn on the bike and activate the lighting circuit the relay powered by the battery sends power to the trailer lights based on the current sensing wires telling it which bulbs are on. Only catch is if one of your bulbs on the bike burns out the corresponding trailer light will not work since no current is being drawn from the burned out bulb.

I have attached a drawing that I made and sent to Unigo to help their customers better understand how to wire up their trailers. Their previous instructions were a little difficult to understand. Please note this is for a Unigo and wire color combinations will vary on other trailers but the wire colors on the back of the bike should remain the same.

You can call Mark Huffman @ Unigo and order a relay from him about $65 as I recall. You may be able to find them on the internet cheaper . . . Marks number is on the Unigo site under Contact Us!!
Attached Files
File Type: pdf Unigo K1200lt Wiring Diagram.pdf (75.1 KB, 276 views)

Dan Finazzo
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Last edited by dfinazzo; Feb 20th, 2008 at 12:00 am. Reason: error
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post #6 of 7 Old Feb 20th, 2008, 7:53 am
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Re: how to hook up a trayler wireing on my k1200 lt 2005

VERY NICE drawing Dan. Thank you

I printed it out and it will reside with the other "reference" papers on my LT

This drawing is definetly worthy of the "Hall of Wisdom"

Moderators, check it out.


Hans
St. Petersburg FL

2002 K1200LTE
"Silver Buffalo" Totaled 5/06
2005 LT
"Esperanza"
BushtecGenesisTrailer
"Our preferred long distance carrier"



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post #7 of 7 Old Apr 2nd, 2008, 12:51 am
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Re: how to hook up a trayler wireing on my k1200 lt 2005

Quote:
Originally Posted by k1200ltdream
I want to buy a new trailer so i need a trailer hitch and the shop who would install the hitch say he wont look at the wiring cause i have abs brake.
how could i do it myself.
please help me
i love my k200 LT
Claude,
I have a Dauntless hitch and its' a snap to put on. Works well. I have 25,000 mi on the bike and 15 is pulling the tent trailer.

Cheers, Bill
05 K1200LT
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