CURT 55177 Non-Powered 3-to-2-Wire Splice-in Trailer Tail Light Converter, 4-Pin Wiring HarnessCURT$35.24Out of Stock
View productAsk a Question About This Product
Our in-house experts typically reply within one business day.
Our in-house experts typically reply within one business day.
CURT
Always the correct part
We know our products
Quality Products
Free Shipping!
Always the correct part
We know our products
Quality Products
Free Shipping!
Warranty: One-Year Limited Warranty
Output Type: 4-Way Flat
Tail Light Circuits: 5.0 Amps Per Circuit
Turn and Brake Circuits: 3.0 Amps Per Circuit
Installation Time Exact (Minutes): 0
When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT electrical converts offer the solution. Working tail lights on your trailer are absolutely essential any time you tow, and a converter provides an effective way to properly equip your vehicle for safe towing. A CURT electrical converter, much like our custom vehicle-to-trailer wiring harnesses, provides a trailer connector on your vehicle by splicing into the vehicle's electrical system. Electrical converters are designed to splice directly into the taillight wiring, rather than plugging into various sockets, giving them the nickname "taillight converters". Though it requires a little extra work compared to a custom wiring harness, a tail light converter offers a reliable, long-term connector solution. This CURT electrical converter is designed to convert a 3-wire system to a 2-wire system and provides a standard 4-way flat connector socket to plug in your trailer. It is designed to fit certain models of Acura, Audi, Buick, Chevrolet, Chrysler, Dodge, Eagle, Ford, Geo, Honda, Hyundai, Infiniti, Isuzu, Kia, Mazda, Mercedes, Mercury, Mitsubishi, Nissan, Oldsmobile, Peugeot, Plymouth, Pontiac, Saturn, Suzuki, Toyota, Volkswagen and Volvo (to verify your vehicle compatibility, see the CURT application guide at curtmfg.com). This converter is made with cutting-edge surface-mount technology (SMT) circuitry, featuring electrical components that are mounted directly to the surface of the board rather than being inserted into a series of holes. SMT circuits have longer life cycles, lower resistance, reduced heat generation and are more reliable than through-hole-mounted components.
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 888-634-9494The Curt 56175 is a tail light converter that adapts a vehicle's taillight wiring to a 4-flat trailer connector. It converts the vehicle's tail light, brake light, left turn, and right turn signals into the corresponding circuits on a standard 4-flat connector for trailer use.
No. The Curt 56175 is designed only for 12 volt negative ground systems. It requires access to the vehicle's taillight wiring harness, which is typically located behind tail light housings, rear access panels, or rear bumpers. Compatibility depends on your specific vehicle's electrical system and wiring accessibility.
No. The Curt 56175 is designed exclusively for 12 volt negative ground systems. Do not use it on 24 volt vehicles or positive ground systems.
You will need a test lamp to identify the vehicle's taillight wires, wire taps to connect the converter to the vehicle harness, cable ties to secure the converter wires, and a drill with a 3/32" bit to create the ground mounting hole. A screwdriver is needed to install the ground screw.
The converter includes a ground screw, ground eyelet, double-sided tape for mounting the converter module, and wire taps for connecting to the vehicle harness. Cable ties are referenced but it is unclear whether they are included in the kit.
Yes. Step 3 of the installation instructions requires you to temporarily remove the vehicle's negative battery cable from the battery before connecting any wires. Reconnect it after the converter wires are secured with cable ties.
Use a test lamp to identify the corresponding wires in the vehicle's taillight harness for the left turn, right turn, tail lights, and brake lights. The manual provides typical locations for taillight wiring based on vehicle type (behind driver's or passenger's tail light housing, rear access panel, or rear bumper). Once identified, connect the converter wires using wire taps: Brown to tail light circuit, Yellow to left turn circuit, Red to brake light circuit, and Green to right turn circuit.
Mount the converter in a clean, accessible location on the vehicle. If mounting outside the cabin, choose a clean surface that is out of the path of spray and debris from the rear wheels and road surface. The manual recommends placing the converter on the driver's side of the vehicle and routing the green wire to the passenger side. Use the double-sided tape provided to secure it.
Locate a suitable mounting location for the ground eyelet on the vehicle's frame or cross member near the converter. Remove any debris or undercoating to expose a clean metal surface. Drill a 3/32" hole and mount the white ground wire using the ground screw and eyelet provided.
Yes. You must drill a 3/32" hole in the vehicle's frame or cross member to mount the ground eyelet. Before drilling, verify that no miscellaneous items are hidden behind or under the surface to avoid damage to the vehicle or personal injury.
Drill a 3/32" hole in the vehicle's frame or cross member to mount the ground eyelet.
The Curt 56175 has five input wires that connect to the vehicle's taillight harness: Brown wire connects to the tail light circuit, Yellow wire to the left turn circuit, Red wire to the brake light circuit, Green wire to the right turn circuit, and White wire is the ground connection.
Use wire taps to attach the input wires of the converter to the corresponding vehicle harness wires. Push the metal lock down when the wires are fully inserted into the wire taps. The converter wires are: Brown to tail light circuit, Yellow to left turn circuit, Red to brake light circuit, and Green to right turn circuit.
Two testing methods are available. With a circuit tester: attach the ground lead to the exposed ground terminal of the 4-flat end, then activate the tow vehicle's left turn, right turn, tail, and stop lights one at a time and probe the three receptacles of the 4-flat end to confirm proper functionality. With a trailer: mate the 4-flat connector with the trailer and run the same test using the trailer lights. If a trailer light function does not work, disconnect the 4-flat, turn vehicle functions off, and recheck with a circuit tester. If the tester shows good functionality, the issue is with the trailer.
Before drilling, verify that no miscellaneous items are hidden behind or under any surface to avoid damage to the vehicle and/or personal injury. Temporarily disconnect the vehicle's negative battery cable before connecting any wires to the taillight harness.
The Curt 56175 works on 12 volt negative ground vehicles with accessible taillight wiring. Check your vehicle's electrical system and whether the taillight harness is accessible behind the tail light housings, rear access panels, or rear bumpers.
You will need a test lamp, wire taps, cable ties, and a drill with a 3/32" bit. Wire taps and some other items may not be included in the kit.
Yes, you must drill a 3/32" hole in the vehicle's frame or cross member for the ground eyelet. Before drilling, verify no hidden items are behind the surface.
Connect the Brown wire to tail light, Yellow to left turn, Red to brake light, and Green to right turn circuits on the vehicle harness using wire taps. The White wire is the ground connection.
Yes, temporarily remove the negative battery cable before connecting the converter wires, then reconnect it after securing the wires with cable ties.
| Kit # | Pkg # | Bulk # | 30-Pack# | Powered | Circuit-Protected | Signal Circuit | Taillight Circuit | SMT |
|---|---|---|---|---|---|---|---|---|
| 59496 | 56496 | -- | 56497 | Yes | Yes | 3.0 amps | 6.0 amps | Yes |
| -- | 56130 | -- | -- | -- | -- | 3.0 amps | 5.0 amps | Yes |
| -- | 56175 | -- | -- | Yes | Yes | 3.0 amps | 5.0 amps | Yes |
| 59187 | 56187 | -- | -- | -- | Yes | 3.0 amps | 5.0 amps | Yes |
| 59190 | 56190 | -- | -- | Yes | -- | 7.5 amps | 7.5 amps | Yes |
| -- | -- | 58240 | -- | -- | -- | 2.1 amps | 5.0 amps | Yes |
On Sale Today
Original price was $43.95. Current price is $39.99.You save $3.96 (9%)
Free Shipping
Ships free on all orders
Authorized Dealer
Quick Ship
In stock and ready to ship — order now!
Shipping from Lancaster, TXFREE SHIPPING
Estimated delivery Sun, Aug 16 - Tue, Aug 18
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.