Question about 1999 Toyota Tacoma PreRunner

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How do I run tail lights to a trailer from my 99 Toyota truck?

It has some wiring but not long enough to reach my trailer plug. Any suggestions appreciated!!!

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Buy bulk wire and extend the harness, u will need **** connectors and a cheap crimping tool.

Posted on Dec 10, 2008

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I dont know how to wire lights to trailer from 1986 toyota pickup


You need a "test light". Then you turn on the circuit you want to wire in, tail lights, brake lights, blinkers and poke around the back of your light sockets until the test light comes on. Then you splicew into that wire and run it to your plug in. If you don't know which wire is what on the trailer, hook it up and with the wire fastened into the truck harness, try it on the trailer harness wires until you get the proper lights working. Process of elimination. Hope this helps.

Nov 04, 2011 | 1985 Toyota Pickup

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Wiring Different Trailer Types - Highlander


Hello all,

For those of you that need to wire up a trailer or have to occasionally borrow trailers and look at the wiring plugs with disdain (I mean face it they don't make sense, grd is white, +12vdc is black, etc), this is for you.

Plug Types/Application
7 Way - RV Trailers, Horse and Utility Trailers
6 Way - Horse, Stock and Utility
4 Way - Utility Trailers

Columns are: Color, Function, Mark on the plug.

Seven wire Trailer plugs:

Horse, stock or utility trailers:

White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric2_bing.gif Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7


Six wire trailer plugs:

Horse, stock or utility trailers:
White = Ground - GD
Yellow = Left turn/Brake -LT
Green = Right turn Brake -RT
Brown = Tail and clearance lights - TM
Red or Black (not both) = Battery2_bing.gif, aux power - A
Blue = Electric Brakes - S

Recreational Vehicle: (color, use, plug mark)
White = Ground - GD
Brown = Right turn Brake - RT
Green = Tail and clearance lights -TM
Black = Battery, aux power - A
Red = Left turn/Brake - LT
Blue = Electric Brakes - S


Four wire plugs:
White = Ground
Yellow = Left turn/Brake
Green = Right turn Brake
Brown = Tail and clearance lights


Ground should be 10ga.
Others 14 ga

A test light and a 12VDC power source can be handy for trouble shooting.
Best regards
Mike

on May 16, 2010 | Toyota Highlander Cars & Trucks

Tip

Trailer Wiring Problems?


Hello all,

For those of you that need to wire up a trailer or have to occasionally borrow trailers and look at the wiring plugs with disdain (I mean face it they don't make sense, ground is white, +12vdc is black, etc), this is for you.

Plug Types/Application
7 Way - RV Trailers, Horse and Utility Trailers
6 Way - Horse, Stock and Utility
4 Way - Utility Trailers

Columns are: Color, Function, Mark on the plug.

Seven wire Trailer plugs:

Horse, stock or utility trailers:

White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric2_bing.gif Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7


Six wire trailer plugs:

Horse, stock or utility trailers:
White = Ground - GD
Yellow = Left turn/Brake -LT
Green = Right turn Brake -RT
Brown = Tail and clearance lights - TM
Red or Black (not both) = Battery2_bing.gif, aux power - A
Blue = Electric Brakes - S

Recreational Vehicle: (color, use, plug mark)
White = Ground - GD
Brown = Right turn Brake - RT
Green = Tail and clearance lights -TM
Black = Battery, aux power - A
Red = Left turn/Brake - LT
Blue = Electric Brakes - S


Four wire plugs:
White = Ground
Yellow = Left turn/Brake
Green = Right turn Brake
Brown = Tail and clearance lights


Ground should be 10ga.
Others 14 ga

A test light and a 12VDC power source can be handy for trouble shooting.
Best regards
Mike

on May 16, 2010 | Toyota 4Runner Cars & Trucks

1 Answer

Fuse for my Tail Lights, licence plate lights, and instrument panel lights keeps blowing on my 2002 Toyota Land Cruiser


  1. Tail,Plate and panel lamps all work off the same fuse
  2. do you have a trailer lamp kit on the cruiser?
  3. check condition of trailer lamp wiring under rear
  4. if not remove and inspect all tail bulbs and their connections
  5. has anyone installed an aftermarket sterio setup possibly running a screw through a wiring harness?
  6. PLEASE RATE THIS POST

Jul 29, 2010 | 2003 Toyota Land Cruiser

1 Answer

How to connect a 4 wire trailer system to a 1994


Tail lights and brake lights are on the same wire.
Connect the wire from the brake light to the connector in the car to the tail lamp wire connector and you will be set to roll

Apr 04, 2010 | 1991 Toyota Pickup

3 Answers

2001 Chevy Silverado. When I plug in the trailer


its in the engine compartment in the fuse box on the drivers side next to battery

Oct 07, 2009 | 2001 Chevrolet Silverado

1 Answer

Factory 99 dodge trailer plug wiring


You'll need to disconnect the wires from either the truck connector or the trailer connector...
I highly suggest purchasing a voltage checker- it looks like a screwdriver with a pigtail of wire with an alligator clip on the end. The tip of the 'screwdriver' has a point for probing. The light in the probe will light up...makes it easy to trouble shoot without a helper behind the trailer.
Hook the aligator clip to a good positive grounding point on the bumper or frame(not painted).
then pin by pin on the truck connection, stick the probe on each terminal tab.. and write a simple diagram where you find brake, tail, backup, etc...
Then i'd suggest, taking the connector off of your trailer, exposing the wire ends.
Run again thru your diagram and turn on each light of the truck. As you do, touch the wires from the trailer to that specific terminal. (make sure your ground wire is attached on the trailer) you can mark each wire with a piece of tape and label it which is which.
then simply attach your trailer wires according to your diagram to the terminals in the connector... that should get you in business..
hope that makes sense...
That way if the factory wiring harness remains the same, you'll be able to use it with other trailers if the need arises..

May 28, 2009 | 1999 Dodge Ram

1 Answer

Trailer signal and brake lights not working at back of trk


THERE SHOULD BE SEPARATE FUSES FOR THE TRAILER WIRES. HAVE YOU LOOKED UNDER THE STEERING COLUMN FOR THEM? IF YOU HAVE AND THEY CHECK OUT OKAY, THEN CHECK THE WHITE WIRE ON THE TRAILER PLUG, IT IS THE ONE THAT IS EXPOSED ON THE TRAILER PLUG. IT IS THE GROUND FOR ALL THE TRAILER LIGHTS AND THE MOST IMPORTANT OF ALL THE WIRES. SEE IF THE TRAILER HAS A GOOD CLEAN GROUND AS WELL(WHITE WIRE). HOPE THIS HELPS. PLEASE KEEP ME POSTED. THANKS FOR AN HONEST RATING AND FOR USING FIX-YA. GOOD LUCK

May 18, 2009 | 1998 Ford Expedition

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