Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2005 Ford Excursion
These items fit your vehicle
2005 Ford Excursion
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Hooking up trailer lights doesn’t have to mean cutting into your vehicle’s wiring. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs directly into existing factory connectors, so the install stays clean and simple. Each plug matches your vehicle’s wiring for a direct fit—no guessing, no splicing, no exposed wires.
Standard wiring can overload delicate factory circuits, but this harness uses a powered converter that draws power directly from a 12V line run to the battery. That means the trailer lights get their power from this black wire instead of the vehicle’s tail light wiring. The design helps protect your vehicle from shorts and allows the easily replaceable harness to take the hit if something goes wrong with the trailer.
You don’t have to worry about parasitic drain or disconnecting anything when you’re not towing. The converter stays powered from the battery but only activates when a trailer is plugged in. There’s no current draw on your system when idle, so you can leave it installed full time without worry.
Whether your trailer uses traditional bulbs or LEDs, this harness is built to handle both without additional adapters or resistors. The 4-flat connector provides running light, turn signal, and brake light functions that work reliably across lighting types for consistent performance trip after trip.
If you ever need to test the connection, it’s straightforward—brown wire for running lights, yellow for left turn/stop, and green for right turn/stop. The simple layout makes it easy to verify proper operation with a basic test light or multimeter, so you can tow confidently knowing your wiring is working right.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
It worked great and was easy to install on my 2014 jeep compass.
Works perfectly, easy install. Very good product! Very, very happy !
I am totally impressed rugged material and constructed parts . Very easy to install with one other person as a extra hand ...
Fit great, worked perfectly to get a household move done, from Washington to Oklahoma
Great product. Fast shipping!!
Worked great!
4 stars is for speedy delivery. haven't had a chance to see if it will hook up to my jeep compass wiring yet but looking at it I'm sure it's the right one. if given the chance I will write a final review
Excellent
No problems in installing this. Directiins were good, video was spot on.
Awesome product and super fast shipping!
Great product! But shipping was longer than expected!
You always have the correct fitting parts and your service is excellent.
Video made it super easy to follow along. Everything you need is provided in the kit. Would advise a lift or ramp to create more clearance under the car but still able to complete, without one.
Fast shipping. Quality product. Arrived in perfect condition.
Thanks etrailer
I can't believe how complex trailer wiring is getting. Instructions well laid out and easy to follow.
very good instructions
The wiring kit came on time. The instructions were easy to follow. The kit was easy to install and with testing it took me about an hour. I would Recommend the the product to anyone who wants an easy installation. It was great!
A good quality harness it was easy to install and the installation video was a great help and not hard to follow.
Works wonderful
Yeah everything worked out as purchased. lights work on trailer. break light work on 2014 jeep compass alot of extra wire to deal with, But it's fine I guess. Great
Still going strong! Hitch receiver & towing lights for my 2014 Jeep Compass.
Just as advertised, dependable AF
Been a year and gets used daily. no wear and tear to speek of and the plug and play ease of install made it simple to install. They offer this as a universal kit as well but for the few bucks more purchasing the spacific kit for your car is well worth it.
Ronald
12/18/2023
update: 2 years now and still rock solid. I tow a small trailer every day, 7 days a week connecting and disconnecting the trailler and have had no issues at all with the power connections or the wires becoming frail or fraid. Simply a quality product thats proving to be durable over time.
Great product ,installation was easy and accompanying directions were easy to follow. My etrailer hitch and lighting installed ,and couldn'tbe happier
Robert
10/31/2021
Excellent
The wiring harness was a perfect match with the vehicle wiring, just beeded a few wire ties and a little electrical tape. Good price too.
Every thing worked out great
Perfect ,works like it's meant to
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Jeff
4/10/2021
No problems after one year, would definitely buy again