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Includes harness, 4-flat extension, mounting bracket and hardware
Includes harness, 4-flat extension, mounting bracket and hardware
Warranty: One-Year Limited Warranty
Finish: Blank
Installation Difficulty: Professional
Installation Time Exact (Minutes): 45
Towing your vehicle behind your RV is a great way to experience more of the adventure on your cross-country excursions. Whether you're towing a compact car or a full-size truck, CURT has the perfect solution to help you Bring It! CURT towed-vehicle RV harnesses are a vehicle-specific, plug-and-play solution to wiring your vehicle for dinghy towing. They use original-equipment-compatible connectors to plug into your vehicle's wiring system without any cutting, splicing or soldering required. They provide a standard 4-way flat connector to plug into the RV socket and synchronize the vehicle's tail lights, turn signals and brake lights with the RV's. Because each towed-vehicle RV harness has a vehicle-specific design, installation is fast and easy. This particular RV dinghy towing wiring harness is designed for specific years of the Ford F-150. CURT RV harnesses are also built to provide long-lasting operation. They feature integrated block diodes that protect the vehicle's circuits from the RV signals. They isolate the sensitive vehicle electronics, keeping them from overheating and short circuiting. Every CURT towed-vehicle RV harness comes ready to install with all necessary hardware included. They also come with a 4-way flat extension to provide plenty of length to plug into the RV socket, as well as a connector mounting bracket to mount the connector on the vehicle.
CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-9494Rediscover "Us" Time | Tested. Proven. Safe. Towing Products
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2021 - 2023 | Ford F-150 | With LED taillights, backup sensors, and onboard scale |
Yes, the CURT 52104 Custom Towed-Vehicle RV Wiring Harness for Dinghy Towing, Fits Select Ford F-150 (Part #BKDK52104) is designed to fit the 2021-2023 Ford F-150.
The CURT 52104 Custom Towed-Vehicle RV Wiring Harness for Dinghy Towing, Fits Select Ford F-150 (Part #BKDK52104) fits 2021-2023 Ford F-150 models. The 2023 model year is the last year covered by this part number. For newer models, check for an updated version.
The CURT 52104 Custom Towed-Vehicle RV Wiring Harness for Dinghy Towing, Fits Select Ford F-150 (Part #BKDK52104) fits the following vehicles: 2021-2023 Ford F-150. Always verify your specific year, make, and model before ordering.
The CURT 52104 Custom Towed-Vehicle RV Wiring Harness for Dinghy Towing, Fits Select Ford F-150 (Part #BKDK52104) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Part 52104 is a Curt Manufacturing custom wiring harness that integrates your truck's factory taillight wiring with a 4-flat trailer connector. It allows you to connect a trailer with functioning lights to your truck while maintaining your vehicle's taillight operation. The harness includes yellow and green wires that tap into the driver and passenger side taillights, a white ground wire, and a 4-flat connector for the trailer.
The manual does not specify which truck models, cab styles, bed lengths, drivetrains or frame types are compatible with part 52104. Contact Curt Manufacturing or consult a fitment database to confirm compatibility with your specific vehicle before purchasing.
You will need: ratchet, 8mm socket, socket extension, drill, 3/32" drill bit, fish wire (or equivalent such as a cut-up wire hanger, stiff wire, rope or string), and a cutting tool. Proper tools will improve installation quality and reduce installation time.
Yes. Step 1 requires you to locate the vehicle battery in the engine compartment on the passenger side and disconnect the negative battery terminal. Fasten this wire down and away from the battery while completing the installation. This is a required safety step.
Do not lay tools across the positive battery terminal (typically noted with red covers or a red '+' symbol). This can cause a ground short, resulting in sparks and/or electrical shocks. Keep tools clear of the positive terminal during installation.
Open the tailgate and use an 8mm socket to remove the two bolts securing the taillights in place. Repeat on the other side of the vehicle. Then carefully remove each taillight straight back from the vehicle. Locate the vehicle taillight wiring connectors and separate them from the taillight housing, taking care not to damage the locking tabs. Set the taillight aside in a safe place.
Fish wire is a tool used to push or pull an electrical wire through a blind hole. Make sure the wire is long enough to stick out on the other side. Insert the fish wire through the blind hole and locate it on the other side. Use tape to secure the harness to the fish wire and pull back up. If the fish wire or harness gets hung up, you may have to push back down, wiggle it around, or twist the wire to loosen it. Fish wire can be anything from a cut-up wire hanger, stiff wire, rope or string depending on what is needed.
Beginning on the driver side, drop a fish wire down inside the cavity where the taillight was removed. From under the vehicle, attach the yellow wire to the fish wire and pull up into the taillight opening. Attach the custom wiring harness to the taillight. Re-attach the factory harness to the taillight and the T-connection in the custom wiring harness. Route the green wire over to the passenger side, zip tying as needed along the rear bumper. Repeat this process using the green wire on the passenger side.
Yes. You will need to drill a 3/32" pilot hole to create a grounding point for the white ground wire. Locate a grounding point such as an existing screw or bolt in the frame of the vehicle, or drill a new 3/32" pilot hole. The area should be free from rust, dirt, and paint; use an abrasive pad or paper to remove rust and paint before drilling. Check for miscellaneous items that may be hidden behind or under any surface before drilling to avoid damage and/or personal injury.
The manual does not provide a torque specification for the two bolts that secure the taillights. Consult your vehicle's service manual or contact Curt Manufacturing for the correct torque value.
Route the 4-flat harness above the frame and below the bed of the truck and along the driver-side frame rail to the front of the truck (Step 7). Once the 4-flat harness is just behind the driver-side front wheel, route the harness to the rear of the driver-side wheel well, then over to the driver-side rear inner wheel well (Step 8). From the engine compartment on the driver side next to the hood hinge, run a fish wire down between the inner fender and the outer fender. Pull the wheel well panel back and locate the end of the fish wire. Attach the 4-flat to the fish wire and pull to the top of the engine compartment (Step 9). Pull the 4-flat up between the inner and outer fender and route it along the driver-side inner fender, zip tying in place as needed and under the air intake to the front of the truck (Step 10).
Locate a grounding point such as an existing screw or bolt in the frame of the vehicle. If no suitable existing fastener is available, drill a 3/32" pilot hole. The area should be free from rust, dirt, and paint; use an abrasive pad or paper to remove rust and paint. Secure the white ground wire with the ring terminal on the existing fastener or with the provided ground screw.
Once the custom wiring harness is installed, verify that the harness is functioning by attaching the 4-flat to any vehicle with functioning trailer lights. The taillights on the tow vehicle should function along with the taillights on the towing vehicle. You can also use a test light to check for proper function.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. This is the only maintenance requirement stated in the manual.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. Exceeding either rating may damage the product or vehicle electrical system.
The installation difficulty level is rated as Easy. However, installation difficulty levels are based on time and effort involved and may vary depending on the installer's level of expertise, condition of the vehicle, and proper tools and equipment.
Read all instructions thoroughly before you begin installation. Proper tools will improve the quality of installation and reduce the time required. All steps must be followed to ensure the product will function properly.
The primary wiring locations are T1 (behind driver side taillight housing) and T2 (behind passenger side taillight housing). These are where the yellow and green wires connect to the factory taillight connectors. Additional reference locations shown in the wiring location guide include T3 (behind driver side rear bumper), T4 (behind center of rear bumper fascia), and T5 (behind passenger side rear bumper).
The manual does not specify compatible vehicle models. Contact Curt Manufacturing or check a fitment database with your vehicle's year, make, model, cab style and bed length.
You need a ratchet, 8mm socket, socket extension, drill, 3/32" drill bit, fish wire (or wire hanger), and a cutting tool.
Yes. Disconnect the negative battery terminal in the engine compartment on the passenger side before beginning installation and keep it fastened away from the battery.
Yes. You must drill a 3/32" pilot hole for the ground wire, unless an existing frame bolt is available. Check for hidden items before drilling to avoid damage.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower.
Periodically inspect all wires and connections to ensure there is no visible damage or loose connections.
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