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Discussion Starter #1
I have a 99 LT and have recently purchased a Starlight Jupiter trailer. I purchased and installed a Dauntless hitch and 4 relay isolator. I have evrything working except for the running lights, I have no power to the trailer, but my tail lamps are working. Any suggestions???

DGEE.....
 

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I am not sure why but I had a nightmare trying to get mine working. What I finaly did was forget the colors and used a voltmeter to find power and wired accordingly. amazingly it worked, probably the hardest project I have done to the LT. Once I learned how to remove the tupperware, I think I was more intimidated than anything, though, by the tupperware.

I would love to see a better plug system than the one offered by Dauntless, as far as wiring goes, wires should be already installed. I found one at West Marine, but decided to save my money, it was costly.
 

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I'm a little confused by the way you said it but from what I understand is you have tailights but no marker lights?
Marker lights or running lights are usually spliced into the taillight wire,
does that give you a starting point?
 

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Discussion Starter #4
Well i found some of the problem, the way the tail light assembly is set up the center bulb and wires do nothing and that is what the running lights on the bumper of my trailer are wired into.

I used a jumper and went into the right tail light and it works when the key is on, but when you start the bike it blows the fuse on the relay. i'm not an electrical guru, so I'm totally lost now. I have power to everything but the brown wires, and when i put the power to them it blows my fuses.....

That problem and my typical radio gremlins are driving me nuts.......

I appreciate the input
 

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Brown wires are ground for BMW. Putting power to them is bad and should be avoided.
 

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Your little electrical Gremlin is probably a homotron,
that's a weird little electron that goes around blowing fuses. :)

There now that I've got that out of the way....

If your trailer was made in the US it probably has a standard wiring harness and related color code which is also what Dauntless uses
white=ground
brown=tail light
yellow=left turn
green=right turn
many times the brake light uses both turn signal wires, if not there's usually a red wire for brakes

BMW has their own color code
brown=ground
grey/blue=tail light
blue/black=right turn
blue/red=left turn
grey/yellow=brake light

Of course if you're color blind well you're screwed :)
 
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