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Trailer Wiring Harness Installation - 2004 Saturn Vue

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Saturn Vue Wiring



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Installation of a Trailer Wiring Harness on a 2004 Saturn Vue


Today on this 2004 Saturn Vue we are going to install part number 18002 from Tow Ready. On this vehicle we are going to attach it to the factory tow package. We will get in the back of the vehicle. The tow package is located inside the vehicle on the driver side behind and below the jack storage compartment. Then we will remove the jack itself. Follow this wiring harness down a little ways. You can see the tow package wires themselves. There will just be bare ends of wires right here. 00:33

When you pull out the tow package wiring you are only going to get these five loops right here. The black color is going to be your ground, the green is going to be the right turn signal, the brown is going to be your running lights, yellow is going to be left turn, and the light blue wire is going to be reverse lights. We are installing a 4-pole flat so we do not need reverse lights so we will just take that and put it out of our way. If you want to verify the functions of the wires which is always a good idea. 00:58

We are going to take a light tester and verify the running light circuit first. That is the brown wire so you have got that turned on. So we know that is our running light circuit. On the 4-pole flat it is going to be nice that the wire code is almost identical. Brown is going to be the running lights, yellow is going to be left turn, and green is going to be right turn. However for ground that is going to be white but we are going to run that down to the black wire. Or what might be better is attach it to the sheet metal on the inside of the vehicle for ground. We will make our connections first for our running light circuit. That will be brown to brown. We are going to be using the provided quick splices to make the connection. Just put them side by side and then just squeeze them together with some pliers. 01:47

Now we will double check ourselves with the left turn signal. That is yellow so the left turn on our 4-pole flat will be yellow also. Now test the green so we know that is the right turn so the right turn on the 4-pole is going to be green also. On our white wire we are going to just use a good old ring terminal that we got separately. We are just going to attach it to the sheet metal using the self tapping screw. We have got the hole started. Now lets snug it down. We will hook up our tester to this ground now since we grounded to the sheet metal right here and we have got our right turn still working so we will test that. We are good there so that tells us our ground is good and we have got right turn. Then we will try left turn. Then we will go back to our running light circuit and it looks like we are good there too. At this point we will just tuck our wires back out of the way, reinstall our jack, and when we are not using our 4-pole harness we can keep it in the jack storage compartment. When you are ready to use the 4-pole flat wiring you can just pull off the cover, pull out the harness, and just pull out what you need. You can also put your compartment door back too if you would like. It just snaps into place. Then just shut your door and stay away from the latch and pull out what you need. The door seal is plenty thick where it is not going to hurt anything to shut the door on it. Then you can pull this down to your trailer. With that, that will finish our install of part number 18002 from Tow Ready.

Questions and Comments about this Video

If green is Rt turn Yellow is Left turn White / Black is ground and Brown is runningWhat controls the break lights? I also have a blue wire in the bundle????Steve

comment by: Steve L - 12/30/2013

The turn and brake light signals are often combined, this depends on vehicle. So yellow is left turn and brake, green is right turn and brake, brown is running light, white is ground and the blue is typically used for reverse light circuit. If the signals are not combined, then you will need a converter. If you are not sure, let me know the year, make and model of your vehicle. The 2004 Saturn Vue in the video, uses combined circuits.

Patrick B - 12/30/2013


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