Question about 2006 Chevrolet Trailblazer

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I have a Trailblazer with the tow package. I have installed my electric brake and unsure of the wiring. I put white/white, black to thin light blue, orange to red and thick light blue to thick light blue, does anyone know if this is right, I don't want to short anything our when I plug it in.

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Most good quality brake controllers like prodigy have a diagram and or harness that is available from the retailer. some already have it in the system, and you just plug it right in. if not sure, take it to a hitch shop and they will know.

Posted on Jul 21, 2009

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Trailer Wiring Cheat Sheet


Hello all,

For those of you that have or 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 = Electric 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) = Battery, 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

Best regards
Mike

on Sep 23, 2009 | 1998 Ford Explorer

1 Answer

Have a 1994 Dodge Ram 1500 4x4 1500 with wiring problems. The original problem was a brake light out on the drivers side. I changed the tail light plugs. With head lights off I had brake lights with head...


Your truck may have had the factory trailer tow package, but that did not come with a wiring connector in that year. There should be a wire harness under the rear of the truck near the center of the bumper with 7 wires of the following colors/characteristics -

Red/Orange - +12V Battery (Thick Wire) From fuse #8 (40A)
Black/Orange - Tail Markers (Thick Wire)
Light Blue - Trailer Brakes (Thick Wire)
Violet/Black - Backup Lights (Thin Wire)
Dark Green/Red - Left Stop/Turn - (Thin Wire)
Brown/Red - Right Stop/Turn - (Thin Wire)
Black - Ground - (Thick Wire)



Under the dash, the brake controller wiring should be -

Red/Orange - +12V Battery (Thick Wire) From fuse #8 (40A)
Black/Orange - Ground - (Thick Wire)
Light Blue - Trailer Brakes (Thick Wire)
White/Tan - Brake Light sense - (Thin Wire)

Hope this helps.

Mar 19, 2013 | 1994 Dodge Ram

1 Answer

How do i find the wires and install a brake control on a 2008 gmc envoy


If your envoy even had the option of two package and I am not certin that was an option that would include a brake controler wiring harness then in 2008 it would be tucked up under dash around stearing colum. should be colors like blue white red and orange and black wires in a loom or wraped in black tape. if you have the wires athe controler will have a diagram for GM that will tell you which wire color to conect to what. If not you wil need to find the brake light switch and use the wire from the switched side for on wire and a round a blue "10 wire from the controler to the trailer socket and a power wire from a fress sorce like the battery or a lug that is not being used for anything else. Remember to check and be absoletly sure you can tow the weight both toung and total weight safely with the Envoy before attempting to go to the trouble of doing all the wiring. This warning my seem like something you might want to dismiss, but trust me there is a lot going on when you decide to tow. I mention this when you start talking about putting a brake controler on a lighter SUV that might not be capable of pulling a hevy load. The book might say 7k towing capacity, but realisticly and comfortably you will find it is much less. I do not know off hand the ability of the Envoy, but be tottaly sure before you venture out.

Jun 11, 2011 | 2008 GMC Envoy

1 Answer

Instructions for wiring a moving trailer connector


accessconnect_logo.jpg


Trailer Wiring Diagrams 4 Way Systems

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4%20way%20wiring.jpg 4way_vehicle.jpg 4 way tow vehicle side.
4way_trailer.jpg 4 way trailer side.
5 Way Systems

Same as 4 way system listed above but adds a extra blue wire for brake signal or auxiliary power. Used on pop up camper trailers or utility / boat trailers.
5way_vehicle.jpg 5 way tow vehicle side.
5way_trailer.jpg 5 way trailer side.
6 Way System, Rectangle Plug 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary. Use on a small motorcycle trailer, snowmobile trailer or utility trailer. Can also be used as custom wiring on trailers with 3 light/wire systems. See "Tow Vehicle Taillight Wiring" below.
6way_rectangle_1.jpg 6 way tow vehicle side.
6way_rectangle_2.jpg 6 way trailer side.
6 Way Systems, Round Plug

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer. Check with a test light or VOM. Uses: horse trailer, travel trailers, landscaping trailer, car trailer, etc.


6way_vehicle.jpg 6 way tow vehicle side.
6way_trailer.jpg 6 way trailer side.
7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12 volt power or backup lights. Uses: heavy duty landscaping trailer, car trailer, boat trailers, horse trailer, travel trailer, construction trailer, etc. Check with a test light or VOM.


7way_vehicle.jpg 7 way RV flat blade tow vehicle side.
7way_trailer.jpg 7 way RV flat blade trailer side.

Jan 01, 2011 | 2001 Pontiac Montana

2 Answers

Trailer wiring 2008 Trailblazer SS


Sounds like the vehicle came with towing package. There should be 2 large wires and a smaller one. The blue "should" be trailer brake feed. The other large wire, usually the black, would be 12 volt power for trailer interior lights and battery charge. The red should be a smaller wire and it is the back up light wiring to the trailer. Most trailers don't use this wire, except for brake lock out on some boat trailers with hydraulic brakes. Also see http://www.etrailer.com/faq-wiring.aspx. All of this is used for5, 7, or 6 pin plugs.

Feb 04, 2010 | 2008 Chevrolet Trailblazer

1 Answer

2006 trailblazer with tow package electric brake hookup on dash


It's taped to a large bundle of wires just above the parking brake. There will be a large white sticker on it calling out each wire.

Aug 24, 2009 | 2005 Chevrolet Silverado

1 Answer

Installing electronic trailer brake for 2005 dodge ram 150. How to? I have a Reese Brakeman Compact to install. It has four wires (blue, black, red and white) coming out of it, but how do i figure our...


Get the Dodge harness adaptor. Typically about $15 at most auto supply places that carries towing stuff, possibly at an RV center too.
The adaptor will connect to a white plug under your dash, if you have the towing package installed from the factory.
Mine (a '97) was taped to the mega connector just to the right of the e-brake pedal... The package came with instructions on where to find it but no pictures so I had to dig a bit up under there!
If you do not have the towing package, you will be best served doing as the instructions that came with the controller say OR downloading instructions from the Reese website.

Jul 17, 2009 | 2004 Dodge Ram 2500

2 Answers

Electric trailer brake hookup


Truck Brake control

Red/Black stripe Black

Blue Blue

Lt. Blue/white stripe Red

White White

Orange Not used

Jun 28, 2009 | 2006 Toyota Tacoma

1 Answer

Tow plug


I take it the blinkers and brake lights work ok when not hooked up to the trailer? If yes, then the wiring to the tow hitch is not hooked up correctly. How many wires to trailer pig tail connection? U can have up to 7 depending on what you tow. Check to make sure these wires are hooked up from the truck to tow plug correctly: 7 wired---
brown-Rt turn and brake light, yellow-backup, white-ground, blue-electric brake, green-tail running lights, black-battery charger, red-left turn signal and brake light. Let me know if u have something other than 7 wire, I'll get the wiring color and source info for u.



Nov 25, 2008 | 1998 Ford F150 Regular Cab

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