Question about 2005 Jeep Grand Cherokee

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Installing a trailer brake controller and need to tap the brake light wire. This is the wire that shows 12 only when the pedal is pressed. What color is the wire on an '05 Jeep Grand Cherokee Ltd? I could not find a white/tan or white/green wire as stated in the mopar instructions.

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Don't bother with a schematic...they all differ. Use a simple test light and just probe the rear light harness with everything turned off except for the brake lights, only one wire should show power. You can also check the color of the wire coming directly out of the bulb socket. I own a jeep, can read and draw wiring diagrams and have yet to find a diagram that has the same color coding as my vehicle.

Posted on Sep 28, 2009

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1 Answer

Need a schematic that shows what eachof the colors of wires should be connected to on a 7 blade RV plug in receptacle.


7-Way RV Trailer Connector Wiring Diagramqu363_250.jpg
Click to Enlargequ363_2_250.jpg
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Question:
trailer connector wireing diagram. need to know which color wire go to which post.
asked by: Joann

Expert Reply:
When wiring a trailer connector, it is best to wire by function, as wire colors can vary. We have an excellent wiring diagram on our website, I will provide you a link so you can look at it.

If you are looking at the inside of the trailer connector where the wires mount to the terminals starting at the notch at the top and working clockwise:

1:00 is Black and 12 volt power
3:00 is Green and Right Turn and Brake
5:00 is Blue and Brake Controller
7:00 is White and Ground
9:00 is Yellow and Left Turn and Brake
11:00 is Brown and Tail and Running Lights
Center is Purple and is Optional Reverse

I recommend using a circuit tester like part # 40376 to verify your connections.

Sep 12, 2013 | 2005 Dodge Ram 2500 Truck

1 Answer

I have installed a brake controller and I cant find the brake switch which I must tie into to make the trailer brakes work. I think I found the switch but the wires seem awfully thin.


Hi, if you pull the connector off the switch and the brake lights no longer work, you have the right wires. These wires do not carry the current for the trailer brakes. You will have another wire from the controller to the trailer plug for those. That wire is usually 14 gauge or larger--follow the directions to get the proper size. You are hooking in to the brake switch wire just so the controller knows when you are stepping on the pedal. Make sure you connect to the wire that does not have power except when you step on the pedal. I would tell you the color, but I do not have the diagram. Use a 12 volt test light to see which terminal in the connector is hot. The wire you want is the other one. Please let me know if you have more questions, and thanks for using FixYa.

Jun 13, 2011 | 2006 Pontiac Montana SV6

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I am trying to make sure my brake controller is properly wired. my brakes do not work automatically when I press the brake pedal,but do work when I manually use switch on brake controller.


Use a test light and find the wire that has power when you press the brake pedal. This is the wire that you need to tap into for you trailer brake controller.

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I tow an enclosed trailer with my 2002 freelander and the brake lights don't work on the trailer. I have the proper connector which works fine for the turn signals, the hazard flashers and the overall...


If the Brake light filaments in the globes are OK then you could have a bad connection some where in the brake light circuit from where the trailer connector cable is tapped into the vehicle wiring loom.
Start by disconnecting the trailer connector and checking on the vehicle socket for an indication that voltage is present by using a multimeter or test lamp while the brake pedal is pressed. If not OK, then the fault is either where the brake light wire is screwed into the socket or the connection in the vehicle wiring loom.
If OK then reconnect trailer plug and after removing cover, check the trailer plug where the brake light wire is screwed into it. If OK, then check where wire is connected at trailer lamps. If not OK, then there is a broken wire in the trailer cable.

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I have a 2001 F150 and am trying to find out where the factory installed plug in is for the brake controller wiring. I have the brake controller and the instructions say to read the truck owners manual...


Hi. There is a grey plug with 6 wires right behind your OBDII diagnostic port on the lower dash board above your accelerator pedal.

The color of the wires on the plug are blue, green, red, white and brown. The wires are as follows:
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Brown....interior vehicle illumination (not used)

The factory wire harness that you will need to attach your brake controller will plug right into this plug. The factory wires are colored the same as above.

After-market and brake conroller wires are colored as follows:
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White....ground
Black....12v positive

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1 Answer

When i hook up a trailer the running lights wont work but the turn and brake lights work,sometimes the brake lights will stay on after i apply the brakes and i have to tap the brake pedal to make them go...


The things you need to check are the wires from the truck and the wireing to the trailer. If you have a 4 pin flat plug the wires are colored white,brown green and yellow.White is ground,brown is the tail light,green is right turn and stop,yellow is left turn and stop.The brake light switch on the brake peddle needs to be adjusted or replaced to cure your other problem.

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1 Answer

Hi I am installing a trailer electric brake


I belive it would be the wire that actually sends the control signal to the controller?...correct? well the if so you would need to tap into the wire casing with a test light to see which wire is lighting the test light when the brake pedal is depressed good luck

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Looking for a wiring diagram for a 2006 Ford Expedition


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2 Answers

Pressing brake causing blinker issue


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