wiring question... - Fiberglass RV


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Old 02-29-2016, 06:47 PM   #1
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wiring question...

Had a look at my wiring for my Mity Lite trailer. It has a 6 round plug. The black battery wire not in use. The rest are white, red, brown, green yellow. The five colors enter the trailer underneath and run down the drivers side to the left rear light. Red stops there but the other 4 ( white , brown, green yellow) continue to the right rear light. Does this sound correct? What does what? Thanks !
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Old 02-29-2016, 07:29 PM   #2
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...standard color codes...
White is ground or common...
Brown is for marker/parking lights...
Green is for right blinker/brake light...
Yellow is for left blinker/brake light...
Red is a hot lead, generally used for battery charging or other power needs...
Blue or Orange is for trailer brakes...
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Old 02-29-2016, 08:29 PM   #3
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Yes I know that. Trying to figure out what's been done to my trailer...BROWN, YELLOW, GREEN , WHITE WIRED for right rear light and RED, YELLOW, GREEN , WHITE for left rear light
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Old 02-29-2016, 08:33 PM   #4
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My truck is a 4 pin flat....
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Old 02-29-2016, 09:22 PM   #5
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It appears your wiring may be color coded to a different standard as follows:

Black is battery
White is ground
Brown is right signal/brake light
Red is left signal/brake light
Green is marker/parking lights
Yellow is backup or unused

This is color coding that vintage Trillium trailers use. To verify this, you have to check the colors of the wire connected to the taillights. For example, the right taillight should have a white, brown, green and possibly yellow wire connected to it. The side lights should have just a white and a green wire connected to them.
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Old 02-29-2016, 09:35 PM   #6
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Thanks that looks like it's it. With my 4 pin from my truck I guess I could go red from trailer to Yellow on truck and ignore yellow in the trailer?
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Old 02-29-2016, 09:42 PM   #7
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I don't know whether you can get a 4-pin flat adapter for your 6-pin connector. If not, you will have to wire in a 4-pin connector. To confirm your trailer wire colors are coded the same as Trillium, you would have to test it with your truck.
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Old 02-29-2016, 09:47 PM   #8
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Easier to wire a 4 pin connector and Bob's my Uncle. Thanks John.
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Old 02-29-2016, 09:49 PM   #9
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Quote:
Originally Posted by spaghettiroad View Post
Thanks that looks like it's it. With my 4 pin from my truck I guess I could go red from trailer to Yellow on truck and ignore yellow in the trailer?
Yes, that's correct.

Red on trailer to yellow on truck
Brown on trailer to green on truck
Green on trailer to brown on truck

On my Trillium, the yellow wire (backup signal) runs back to the taillights, but its not connected.
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Old 02-29-2016, 09:52 PM   #10
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The Yellow in the trailer appears connected to the right and left rear light....
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Old 02-29-2016, 10:00 PM   #11
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Just checked, license plate light is green and white
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Old 02-29-2016, 10:00 PM   #12
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Quote:
Originally Posted by spaghettiroad View Post
The Yellow in the trailer appears connected to the right and left rear light....
You correctly assumed that with a flat 4-pin connector, this wire can't be used.

White wire on truck to white wire on trailer...
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Old 02-29-2016, 10:06 PM   #13
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I assume the yellow in a 6 pin configuration was for backing up? My battery from what I can tell runs a black and red to the interior. The red connects to a 4 panel fuse plate; internal lights, sink pump and propane heater...
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Old 02-29-2016, 10:09 PM   #14
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There's also and exterior 110V hook up to a seperate fuse box with its one 15a on/off fuse; allows 2 plugs to be installed inside.
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Old 02-29-2016, 10:14 PM   #15
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Quote:
Originally Posted by spaghettiroad View Post
I assume the yellow in a 6 pin configuration was for backing up? My battery from what I can tell runs a black and red to the interior. The red connects to a 4 panel fuse plate; internal lights, sink pump and propane heater...
Yes, yellow in a 6-pin configuration is for backing up.

Concerning your battery (assuming its located in the trailer), color coding is red = positive terminal and black = negative terminal. The other standard is black = positive terminal and white = negative terminal.
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Old 02-29-2016, 10:18 PM   #16
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External marine battery with red/black cable wires running into trailer. Black to be grounded to....and red connected to fuse plate I assume. Red tap wire to fuse plate and black grounded and same idea with lights and heater
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Old 02-29-2016, 10:26 PM   #17
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Quote:
Originally Posted by spaghettiroad View Post
External marine battery with red/black cable wires running into trailer. Black to be grounded to....and red connected to fuse plate I assume. Red tap wire to fuse plate and black grounded and same idea with lights and heater
Black/ground could be grounded through frame, but better to have black/ground wire run from battery back to each load.

Typically a 110vac to 12vdc converter/charger is also included in the trailer. When shore power is available this will power the 12v loads and charge the battery.
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Old 02-29-2016, 10:37 PM   #18
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Ok Thanks. I wonder if theat's what the metal box is,,,Have not opened it. External hook up runs into the box. Theres an on/of switch outside of box and 2 typical electrical wires running out from either side of box to standard plugs not set up yet...
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Old 03-01-2016, 05:58 AM   #19
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Originally Posted by spaghettiroad View Post
Ok Thanks. I wonder if theat's what the metal box is,,,Have not opened it. External hook up runs into the box. Theres an on/of switch outside of box and 2 typical electrical wires running out from either side of box to standard plugs not set up yet...
If you post some pictures of this box at various angles, someone might be able to provide insight.
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Old 03-01-2016, 11:12 AM   #20
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Originally Posted by spaghettiroad View Post
Ok Thanks. I wonder if theat's what the metal box is,,,Have not opened it. External hook up runs into the box. Theres an on/of switch outside of box and 2 typical electrical wires running out from either side of box to standard plugs not set up yet...
This is likely a breaker box. The switch is probably labeled with 15, for 15A trip.
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