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Trailer Wiring Harness Installation - 2005 Honda Odyssey

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How to Install a Trailer Wiring Harness on a 2005 Honda Odyssey


Today on our 2005 Honda Odyssey, we're going to take a look at and show you how to install this Curt T-Connector Vehicle Wiring Harness with a 4-Pole Flat Trailer Connector. Part number is C56161. Right now, here's what you're going to have in your wiring kit. Of course, just what we're after there. We're looking to have this 4-pole connector situated at the back of the vehicle so we can connect the trailer or cargo carrier, or what have you, to it. As you can see, that runs into our converter box. Now, this converter box is going to take signals from our vehicle, and it converts it into a usable signal for our trailer. Now, this offers surface-mount technology.

That means instead of our wiring passing through holes on our board, it's been mounted directly to the surface that's inside of there. This is going to give us great reliability and great dependability, even in rough conditions, and it also minimizes the heat and it's going to give us a higher output to our trailer lights themselves. Now, our stop lights or our turn lights are going to draw about 5 amps, same with our tail lights. They're going to draw about 5 amps. This system is not going to take nay power from the lighting system itself. You see here we've got a fuse holder.

The provided fuse will slide in there, and the box is powered from a 12-volt power source inside of the vehicle, so we're not overloading any of our circuits. We're also going to have a ground that's already got a ring terminal on it here. That way we can ground the system out, and everything's going to work properly for us. We've got instructions, some zip ties, you can see some foam tape here for mounting our box, and then a few pieces of hardware there that we may or may not use, depending on the application. They've also provided the smaller 10-amp fuse. This is for mounting in our passenger side kick panel area to complete the circuit here and make sure everything works. Now, to begin our installation, we're going to pull off the couple of little hangers that are located on the rear scuff panel here, so those just thread in.

We'll do that on both sides. Now, we want to pull out on the bottom. We can set this aside. Now, we'll also pull out slightly on our side panel here to get access to this control panel that we've got right here. I'm going to take this top hook out, too, just to help you guys see a little bit better. Now, we're going to take our plug, we're going to go right up, and about midway up over on the side closest to us.

I'm going to slide that in and make sure it clicks. If we look right here, we're going to have a ground location. We'll just use that body ground so we're not drilling any excess holes. You're going to use a 10-mm socket just to pull that bolt out, like I said, through our ring terminal, then we'll thread it back in. We want to make sure, of course, that we keep all the other grounds connected as well. All right. That should be secured just like that. Now what we're going to do is take a little bit of rubbing alcohol. We're going to clean off the back of our box and also this flat area right here. We'll give that a second to evaporate, place our foam tape on the back just like that. I actually think I'm going to run this wire here . I'm going to run it right through here. That'll keep everything a little bit nicer for us. Keep those tucked back out of the way. Just pull the cover off there. We can slide it into position. Push it down so it adheres. Just uncoil our 4-pole wire here. I'm also going to run my 4-pole wire behind the wires there just to keep everything kind of up and out of the way and tidy. Now we'll take our larger 10-amp fuse. I'm going to slide that into our fuse holder, and we'll cap it off. Now we're ready to put our side panel back in place. Place our little catch here. Then, we want to pull out that weather stripping so it'll rest over top of that panel. Now we'll get our rear stuff panel put back into place here. We're going to pull the weather stripping out on it as well. We'll want to pop in on the front side here. What we can do is just bundle up our excess wire here. Take our protective cover, and we're going to put it over top of it here, and we'll be able to use that to go around our wiring, just kind of keep it bundled up. Just like that. Kind of keep it over here out of the way. When we need it, simply unwrap it here, take out whatever amount we'll need, let it rest right over so you've got a good cushion there that's going to protect our wire. The only place you really want to avoid is going to be that striker right there. Here we are, ready to connect to our trailer and head down the road. All right, and we'll take our small 10-amp fuse, pop out our little sliding cover, and we'll want to place our fuse in position number 5. If you have one, 2, 3, 4, 5. Right here, number 5. Just slide our cover back on. Let's go test out that wiring. All right. Now, let's start by turning on our running lights. With those working as they should, turn on our left blinker and our right blinker, and then hit our brakes. All right. With everything working properly, that's going to complete our installation of the Curt T-Connector Vehicle Wiring Harness with the 4-Pole Flat Trailer Connector, part number C56161 on our 2005 Honda Odyssey.


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