Trailer wiring question.
Stellar HDF Member
Joined: Jan 2008
Posts: 3,036
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From: Earth
I am going to guess that the 6th wire is an auxiliary feed power to the trailer. Are there any 12 volt ports/sockets inside that trailer?
Tourer
Joined: Jun 2006
Posts: 445
Likes: 33
From: irwin pa.
wiring
You only need 4 wires. The green will be l turn, the yellow will be r turn, the brown will be parking, and the white will be ground. you can let the others hang or just cut them off. Get a typical four prong flat connector set and change both ends Its pretty easy
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Cruiser
Joined: Jan 2011
Posts: 189
Likes: 49
Well totally confused now, plug and play harness has 4 wire plug that plugs into isolation harness and between the rear light harness plugs. The isolation harness wires to battery & chassis ground, (two neg and one fused positive) So pos goes to pos (batt) and 1 black goes to neg (batt) and the other goes to chassis ground. That leaves 4 wires to trailer plug that is supposed to go to a six wire plug going to a 5 wire trailer harness, which are Green, Brown, Yellow, Red, White.
Tourer
Joined: Jun 2006
Posts: 445
Likes: 33
From: irwin pa.
wiring
The wire in question would be the red, wondering if trailer has surge brakes. I would try to follow red to wherever or test with test light or meter to see what it is for. sorry thats all i can help with from here.
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Tourer
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From: irwin pa.
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Cruiser
Joined: Oct 2011
Posts: 167
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From: Green Bay WI
If they gave you a six-wire harness, one wire is an extra if you want to run auxiliary power to the trailer (or for electric brakes); if you don't need it, leave it in the harness unused, you don't have to hook it to anything. The other five wires, in keeping with what most motorcycles use (including HD) are one for ground, one for running lights, one for brake lights, one for left turn, and one for right turn. How many wires on the trailer side? Trailer side will determine what you need to do as far as wriing. If five, then the above applies.
Both my trailers, (Bushtec Roadstar cargo trailer and Bunkhouse camper) are six wire, with the sixth wire for either brakes or auxiliary power...I've never used the sixth wire on either trailer, but the wire is the harness on the trailer side and the bike side (but not hooked to anything other than the connectors trailer and bike side). It's not like the extra wire takes up room you're going need for something else
For a six pin harness and plug, check with Bushtec (www.bushtec.com)
http://www.bushtec.com/product-p/99701000.htm
http://www.bushtec.com/product-p/99703000.htm
http://www.bushtec.com/product-p/99705000.htm
.. they have flat six set up. But if you don't need the sixth wire, any automotive, farm/fleet, or big box store will have a round five set up and you can simply put the new plug on the trailer side; you can order flat five plugs on-line (some automotive and RV stores carry them as well).
Both my trailers, (Bushtec Roadstar cargo trailer and Bunkhouse camper) are six wire, with the sixth wire for either brakes or auxiliary power...I've never used the sixth wire on either trailer, but the wire is the harness on the trailer side and the bike side (but not hooked to anything other than the connectors trailer and bike side). It's not like the extra wire takes up room you're going need for something else
For a six pin harness and plug, check with Bushtec (www.bushtec.com)
http://www.bushtec.com/product-p/99701000.htm
http://www.bushtec.com/product-p/99703000.htm
http://www.bushtec.com/product-p/99705000.htm
.. they have flat six set up. But if you don't need the sixth wire, any automotive, farm/fleet, or big box store will have a round five set up and you can simply put the new plug on the trailer side; you can order flat five plugs on-line (some automotive and RV stores carry them as well).
Last edited by Concours; Jan 6, 2013 at 06:58 PM.
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Cruiser
Joined: Jan 2011
Posts: 189
Likes: 49
These are the colors on the trailer side. I was hoping I didn't have to trace them down, but if I do, I have the ability. I want the chrome 5 pin plug if I can. And just plug it in to the back of the bike. I like a clean look without wires dangling, just a pet peeve of mine.