etrailer | Tekonsha T-One Vehicle Wiring Harness Installation - 2019 Ford Transit Connect

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Full transcript: www.etrailer.com/tv-install-t...
Today on our 2019 Ford Transit Connect we're going to be taking a look at and showing you how to install Tekonsha's T-One Vehicle Wiring Harness with a 4-Pole Flat Trailer Connector. And here we have our 4-pole wiring. This is what it'll look like when it's installed. You can also tuck it behind here when you're not using it. But when you are ready to use it, you can simply unwind it and it just drapes down over the back of the vehicle. And when you shut your door, it'll pinch in between your weatherstripping.
The only thing you want to make sure you avoid is the striker here in the middle, as the weatherstripping won't cause any damage to your wiring but the striker will. We can now close up the back and we're ready to plug into our trailer and get on our way.This harness is going to offer you all the necessary lighting you'll need to be DOT compliant in all states. This includes your left turn signal, right turn signal, tail lamps and brake lamps. One of the things I like best about this harness is that it has an included module. Our module is going to be hidden inside the vehicle out of sight, and the purpose of the module is to monitor all the signals that our vehicle is producing back at its lights for both your left and right side rear taillight assemblies.
And then it produces the signals and sends them down the 4-pole connector to go to your trailer. What's nice about this is if you have any faults on your trailer's wiring, the modules constantly monitoring those 4-pole output and it will shut down that circuit in the event it detects a short. If it is unable to shut down the circuit in time, our module has its own dedicated power wire with an inline fuse, so that fuse would open and it wouldn't cause any damage or affect the wiring on your vehicle in any way.Your new wiring harness can put up to 4.2 amps of output on its stop and turn circuits, which is going to be plenty for your medium sized trailers, and up to 7.5 amps on your taillight circuits, which is going to be more than enough for those medium size trailers. So if you want to add some additional lighting to the back, go right ahead. Your 4-pole connector also has an included dust cap, which will keep out any dirt and debris, ensuring a long lasting connection.
If you are keeping your wiring outside the vehicle, you can also attach it to the safety chain loop on your hitch to hold it up off the ground and keep it out of the way.We'll begin our installation at the back of the vehicle by removing the access cover located on each side. Access covers have a little cutout for you to stick your finger in and they simply just pull off. You'll take the one off on the other side as well. You'll want to locate the square gray connector located just above your seatbelt here inside the small opening, just above and behind it. Now it's a tight fit, so both me and the camera aren't going to fit in the slot here, but you'll want to press in the release tab and then pull the connector out.
You can see the release tab located here, and you just push it in to make it release. You can now take your new harness and plug the male end into the female end we just disconnected from it. And then we're going to plug the other end of our harness right back into that factory connector.You can see our connection here. So our new harness simply just plugs in line between our factory connectors. We'll that needs to route the green and red wire side of our harness up and across to the other side. In order to do that, we're going to remove our weatherstripping all the way around, across the top here, because we're going to be poking the wire underneath our head liner and everything. We're going to route this wiring by going in the access hole where we went for our yellow and brown wire. We'll pull out on the panel just enough to be able to pull our connector towards the outside. And we can pull all the excess through and this is simply just going to run up along the outside, and we can poke our weatherstripping back on as we go.And when we get over to this side, we're going to do just the opposite of what we did before. And we're going to be feeding it from the outside in. And just like we did on the other side, you're going to need to reach up and find the gray connector, disconnect it and plug this in.Now this is where things are going to get a little bit different depending if you have a passenger transit connect or if it's more of a cargo transit connect where it's stripped on the inside. If it's stripped out, there are grommets located towards the center of the vehicle, but due to th

[@johndelorean5453]

Could the black wire be spliced on to a male cigarette lighter plug and then plugged into the 12-volt socket in the rear instead of snaked to and attached to the battery, or is this not a good idea?

[@etrailer]

The manufacturer says to run the 12V power wire up to the positive battery terminal in the engine compartment. This is so that it does not interfere with any other functions of the vehicle and so that your lights on your trailer are getting constant power when needed. I would not recommend connecting the power wire anywhere but the positive terminal on the battery.
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