For 2016‑2018 Toyota Prius Trailer Wiring 4 Way Fits All Models Curt 56353
Model: 56353-CW3590This Wiring 4-Flat Fits The Following Vehicles:
2016 - 2018 Toyota Prius All Models
This Wiring 4-Flat Includes the Following Parts:
- Custom Wiring Harness, 4-Way Flat Output (Plug & Play)
- Installation instructions, schematics, diagrams, and hardware (if required).
List of Fitment Years:
2016, 2017, 2018
CURT 56353 Vehicle-Side Custom 4-Pin Trailer Wiring Harness
Manufactured by: Curt
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation.
Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Toyota Prius (to verify your vehicle compatibility, see application info) It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use.
You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite However, turning that picture into a reality takes more than just daydreaming It takes a solid connection and the right amount of power.
CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup..
Features:
- Plugs into vehicle tail light assembly to provide a 4-way flat socket
- Simple plug-and-play design eliminates the need for cutting or splicing
- 4-way flat output connects tail lights, brake lights and turn signals
- Equipped with tail light converter for vehicle-trailer compatibility
- Constructed with SMT circuitry for better performance and durability
- Dust cover included to keep connector clean when not in use
- Backed by a limited one-year warranty
Hitches Near Me: We operate out of several warehouses across the country, ensuring faster delivery to your location.
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Product Details
- Brand: Curt
- Model: 56353-CW3590
- Includes: Custom Wiring Harness
Compatibility Chart
Description
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For 2016-2018 Toyota Prius Trailer Wiring 4 Way Fits All Models Curt 56353 Install Notes
Installation Instructions for Toyota Prius
Part Number:
- 56353
Wiring Access Locations:
- P3: Behind driver side taillight housing, inside the trunk
- P4: Behind passenger side taillight housing, inside the trunk
- P6: Behind center of rear bumper
Tools Required:
- Ratchet
- 10mm socket
- Flat blade screwdriver
- Panel trim removal tool
- Wire stripper
- Wire crimper
- Cutting tool
- Sealant (included)
Step-by-Step Instructions:
-
Disconnect Battery:
- Locate the vehicle battery on the driver side under the hood and disconnect the negative battery terminal.
-
Prepare Trunk Area:
- Open the trunk and remove all trunk floor coverings.
-
Remove Storage Trays:
- Remove the fasteners holding the storage trays in place and take out the trays.
- Use a flathead screwdriver to remove the rear fastener in the storage trays.
- Use a trim panel removal tool to carefully pry upwards and remove the front plastic hold-down.
-
Remove Rear Scuff Panel:
- Remove the fasteners securing the rear scuff panel.
- Pull out on the bottom and then up to remove the scuff panel, taking care not to damage the alignment tabs on the back.
-
Remove Side Trunk Liners:
- Starting on the driver side, remove the fasteners and cargo tie-downs securing the side trunk liner.
- Using a flathead screwdriver, locate the small slot on the tie-down and press inwards to release the plastic tie-down.
-
Remove Upper Plastic Trim Panel:
- Remove the two 10mm fasteners securing the upper plastic trim panel and remove the panel.
-
Access Taillight Wiring Harness (Driver Side):
- Pull back the side trunk liner to locate the vehicle taillight wiring harness connectors.
- Take care not to damage the alignment tabs on the back.
- Separate the connector from the trunk light before fully removing the side trunk liner.
-
Disconnect Taillight Connectors:
- Locate the vehicle taillight wiring harness connectors; they will be similar to those on the custom wiring harness.
- Separate the connectors from the taillight housing, taking care not to damage the locking tabs.
-
Install Custom Wiring Harness (Driver Side):
- Insert the custom wiring harness end with the yellow wire between the separated connectors.
- Ensure the connectors are fully inserted with locking tabs in place.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector, such as an existing screw with a nut in the vehicle frame, or drill a 3/32" pilot hole for the provided screw.
- Ensure the area is free of rust, dirt, and paint.
- Secure the white ground wire using the ring terminal and provided screw.
- Warning: Check for miscellaneous items that may be hidden behind or under any surface before drilling to avoid damage and/or personal injury.
-
Access Center Trim Panel:
- On the outside of the vehicle, under the rear bumper, locate the center trim panel.
- Remove the fasteners holding the trim panel in place.
-
Disconnect Rear Taillight Connector:
- Remove the center trim panel to locate the vehicle taillight connector.
- The connectors will be similar to those on the custom wiring harness.
- Separate the connectors, taking care not to damage the locking tabs.
-
Modify Grommet for Wiring:
- Locate the grommet behind the taillight where the vehicle taillight wiring passes through from inside the cabin to the taillight.
- Remove the grommet and cut a slit large enough to route the custom wiring harness through.
-
Route and Connect Wiring Harness:
- Route the custom wiring harness ends with the brown and red wires out through the grommet opening and through the slit in the grommet.
- Insert the custom wiring harness end with the brown and red wire between the separated connectors.
- Ensure the connectors are fully inserted with locking tabs in place.
-
Seal Grommet:
- Reseat the grommet using the provided sealant to seal the cut in the grommet and around all the wires.
-
Mount Converter Box:
- Locate a flat spot inside the vehicle, near the taillight.
- Adhere the black converter box using the provided double-sided tape.
-
Install Custom Wiring Harness (Passenger Side):
- Route the custom wiring harness end with the green wire to the passenger side behind the removed scuff panels.
- Repeat steps 5 through 9 on the passenger side using the harness end with the green wire.
-
Route Black Power Wire:
- Route the black power wire from the vehicle battery as shown on the included CME-PCL-INS sheet.
-
Position 4-Flat Connector:
- When in use, route the 4-flat to the center of the vehicle and out of the trunk.
- When not in use, roll up and store in a convenient, out-of-the-way location inside the trunk.
- Secure any loose wires with the provided cable ties.
-
Reassemble Vehicle Components:
- Reinstall all items removed during installation and reconnect the negative battery terminal.
- Install the provided 4-flat dust cover to help prevent corrosion.
Hardware List:
- Custom wiring harness with 4-flat connector
- Black converter module
- Double-sided tape
- Ring terminal
- Ground screw
- Cable ties
- 10-amp fuse (for fuse holder on converter harness)
- 4-flat dust cover
Safety Notes:
- Battery Connection: The battery connection must be fuse-protected, 10-amp max. Exceeding the product rating can cause loss of warranty, overheating, and potential fire. Do not exceed product rating or tow vehicle lamp load rating, whichever is lower.
- Drilling Caution: Check for miscellaneous items that may be hidden behind or under any surface before drilling to avoid damage and/or personal injury.
Specifications:
- Signal Circuits: 3.0 amps per side
- Tail/Running Circuits: 6.0 amps total
(Check the vehicle owner's manual or contact the vehicle manufacturer for more information.)
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