Question about Cars & Trucks
Wire, green, yellow, red, brown
Posted by Anonymous on
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Posted on Jan 02, 2017
Yellow is the left turn signal, White is ground, Dark Green is the right turn signal, Brown is the running lights and brake light, the others are for the electric brake set up for the trailer.
Posted on Sep 14, 2008
the brown wire on your suburban will be your park lights and the yellow will be brake/turn are you sure the green wire is ground on your led lights? i would think the black wire would be ground
Posted on Nov 25, 2008
SOURCE: trailer light problem
Check it with a test light. White-ground, Yellow-left turn, Green-right turn, Brown-tailights. Check it on the truck first. There are seperate fuses for just the trailer wiring in the fuse box under the hood. The Blue and Red wires are for Trailer brakes, don't worry about those.
Posted on Mar 14, 2009
It looks like there could be a service bulletin to fix this.
TO: ALL TOYOTA DEALER PRINCIPALS,
SERVICE MANAGERS, PARTS MANAGERS
SUBJECT: SPECIAL SERVICE CAMPAIGN 10H
(2000 TUNDRA AND 1999 - 2000 TACOMA TRAILER TOWING WIRE HARNESS
Toyota will initiate a Special Service Campaign to replace the Toyota Trailer Towing Wire Harness
Converter (converter) on certain 2000 model year Tundra and 1999 - 2000 model year Tacoma
vehicles equipped with a genuine Toyota Trailer Towing Hitch or Bumper Hitch. This accessory
is included in the Towing Hitch Kit installed at ports (PIO) and by dealers (***); it is also sold by
dealers as an over-the-counter or service part.
An electrical short or open circuit can cause a fault in the genuine Toyota Trailer Towing Wire Harness
Converter (converter). This can cause a failure of the converter, and if a trailer is being towed at the time,
non-operation of the trailer lights. In limited cases, the converter housing could become heat-deformed.
In the case of the Tundra, the circuitry utilized in the converter was inadequate to properly manage
vehicle and/or trailer-side voltage spikes. If the converter is exposed to a voltage spike it may cause an
electrical short or open circuit within the converter.
As for the Tacoma, due to deficient waterproofing and improper installation location of the converter,
which is mounted in the lower portion of the taillight cavity of the vehicle, an electrical short circuit will
occur if water enters the converter housing.
The following vital information is provided to inform you and your staff of the campaign notification
schedule and your degree of involvement.
1. Owner Notification Letter Mailing Date
The owner notification will be conducted in two phases:
• The first phase will be launched in late August and involve vehicles equipped with port
installed (PIO) genuine Toyota Towing Hitch Kits.
• The remaining vehicle owners, whose vehicles may be equipped with a dealer installed (***)
genuine Toyota Trailer Towing Wire Harness Converter, will be notified in the second phase
to be launched in early September.
We have attached copies of the owner notification letters for your reference.
If you are contacted by an owner of an involved vehicle, who has not yet received a notification,
please verify eligibility through TDN or TIS, inspect the vehicle to assure it is equipped with the
affected part, and perform repairs as outlined in the attached Technical Instructions.
Posted on Jul 12, 2009
Well you have what is called a BUGGER.5 dont go into 4 so the problem is either the trailer is OLD and never had stop lights OR the white wire is your stop lights and it earths through the towball (but it shouldent ) so either someone has cut out the stop light wire .so check rear lights What colour is stoplight wire. As all DC wiring for trailers are 5or 7 core wires 5 for trailers and 7 for caravans..
Let me know how you get on Ron
Posted on Oct 12, 2009
Tips for a great answer:
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Right Turn & Brake
Left Turn & Brake
Green- Right Turn and Brake
Yellow- Left Turn and Brake
Brown- Tail Lights
Red- Reverse (Back Up) Lights
Blue- Electric Brakes
Purple- Auxiliary Power
It sounds like your green and yello wires are shorted together somewhere along the length of the harness. I would check the wires on the trailer first. Easier yet, if you have another trailer to connec or access to another to use for testing, connect to it and see if the problem repeats; if it does the trouble is in the vehicle's wiring.
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