Our in-house experts typically reply within one business day.
Tekonsha
Verify Fitment
Select your vehicle to confirm this part fits.
2016 - 2021 Nissan Altima
Confirmed to Fit
Always the correct part
We know our products
Quality Products
Free Shipping!
Always the correct part
We know our products
Quality Products
Free Shipping!
On Sale Today
Original price was $87.50. Current price is $81.99.You save $5.51 (6%)
Free Shipping
Ships free on all orders
Authorized Dealer
Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Tue, Sep 22 - Fri, Sep 25
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
Tekonsha T-One connector (also referred to as T-Connector) wiring harnesses are the fastest and easiest way to add an electrical connector to the back of your vehicle. These connectors are used to link the wiring from your vehicle to the trailer when towing. Tekonsha T-One connectors feature custom designs to fit each vehicle make and model based on manufacturer specifications. Plus, the Plug & Play connectors on the end of the wires make it easy to install. No cutting or splicing!
Tekonsha offers the largest, most complete line of T-One connectors. To install a Tekonsha T-One wiring harness, simply locate your vehicle's wiring harness connector typically behind the vehicle taillight - unplug the connection and insert the T-Connector into the vehicle's harness. It's that easy! So what are you waiting for? Hit the road with the peace of mind only Tekonsha can provide. Life's a Journey. Stop Often.
| BRAND: | TEKONSHA |
| PART NUMBER: | 118731 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.6 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| CIRCUIT PROTECTED: | YES |
| HARNESS TYPE: | MALE FEMALE |
| TERMINAL QUANTITY: | 4 |
| WIRE COLORS: | BROWN, GREEN, YELLOW, WHITE |
| WIRE QUANTITY: | 4 |
| WIRE GAUGE: | 16 GA. |
| POWER LEAD REQUIRED: | YES |
| ELECTRICAL SYSTEM TYPE: | 3-WIRE SYSTEM |
| HARDWARE INCLUDED: | YES |
Tekonsha is a leading manufacturer of electronic trailer brake controllers, pioneering the category in the 1970s. The lineup spans proportional units such as the Prodigy P3 and Prodigy iD, time-delayed controllers, the wireless Prodigy RF, plus vehicle-specific wiring harnesses, adapters and trailer brake components engineered for smooth, predictable stopping at any speed.
Tekonsha Engineering Company began in 1964 building RV steps and mirrors. Within a few years it had found its real calling, and by the 1970s Tekonsha was pioneering the manufacture of electronic trailer brake controllers, the product category that still defines the brand. More than half a century later it remains the reference name in trailer braking and is part of the Horizon Global group alongside Reese, Draw-Tite, Fulton, Bulldog and Wesbar.
A brake controller is the component that tells a trailer's electric brakes how hard to work and when, and getting that right is the difference between a controlled stop and a shove from behind. Tekonsha builds both major types. Proportional controllers use an internal accelerometer to sense how quickly the tow vehicle is slowing and apply trailer braking to match, so light braking stays light and hard braking is immediate. Time-delayed controllers ramp to a preset output over a fixed interval, a simpler and more economical approach that suits occasional towing.
The current brake controller range covers most of that ground. The Prodigy iD pairs with a phone through Tekonsha's EDGE technology for setup and monitoring, the P3 offers storable settings for multiple trailers and a trilingual colour LED display, the Prodigy P2 adds a dimmable display and boost mode for heavier loads, and the Voyager keeps operation simple and dependable. The Prodigy RF mounts to the trailer itself and controls wirelessly, which suits rental fleets and drivers who swap tow vehicles.
Installation is supported by vehicle-specific brake control harnesses that plug into a factory connector rather than requiring cut-and-splice wiring, along with mounting brackets and adapters. Matched controller bundles pair a unit with the correct harness. Products are tested to meet and often exceed published industry standards.
Experts available to answer your questions
Call 888-634-94941 Year
1 compatible vehicles
| Year | Make & Model | Style | Notes |
|---|---|---|---|
| 2016 - 2021 | Nissan Altima | Sedan | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The 2016-2021 Nissan Altima Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118731 (Part #TK118731) fits 2016-2021 Nissan Altima models. The 2021 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2016-2021 Nissan Altima Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118731 (Part #TK118731) fits the following vehicles: 2016-2021 Nissan Altima. Always verify your specific year, make, and model before ordering.
Yes, the 2016-2021 Nissan Altima Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118731 (Part #TK118731) is designed to fit the 2016-2021 Nissan Altima.
The 2016-2021 Nissan Altima Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118731 (Part #TK118731) Drilling is required for installation. Basic hand tools are typically all you need.
The T-One® T-Connector is a vehicle-mounted wiring harness that provides a connection point for towing equipment. It taps into the vehicle's taillight wiring on both driver and passenger sides and includes a black box module that houses the electrical connections. The connector allows you to attach a trailer or towing equipment without modifying the vehicle's factory wiring.
Yes, the T-One® T-Connector (part number 118731-037) is designed for the Nissan Altima. The manual covers installation on this vehicle model.
You will need: Trim Panel Remover, 10mm Socket & Ratchet or 10mm Wrench, Drill with 3/32" Drill Bit, 1/4" Socket, Wire Crimpers, Wire Cutters, Philips Head Screwdriver, and Test-probe.
The kit includes: two T-One® T-Connector ends (one with yellow wire for driver side, one with green wire for passenger side), a black box module, a white ground wire with eyelet and screw, a 15 amp fuse in a yellow fuse holder, yellow butt connectors, cable ties, and a 4-Flat connector for storage in the trunk when not in use.
Yes. You must disconnect the vehicle's Negative (-) battery cable before connecting the fuse holder to the Positive (+) battery terminal. Reconnect the negative cable only after the fuse holder connection is complete and the 15 amp fuse is installed.
You must open the trunk, temporarily remove the rear threshold plate, and partially remove the felt trunk liner behind the taillights to access the taillight wiring harness on both driver and passenger sides.
Locate the taillight wiring harness on both sides of the vehicle. Separate the existing connector carefully without breaking the locking tabs. On the driver's side, insert the T-Connector end with the yellow wire between the vehicle wiring connectors and lock into place. Route the green wire end to the passenger side behind the panels and along the threshold, then repeat the insertion process. Ensure all connector surfaces are clean and connectors are fully inserted with locking tabs in place.
Yes. You must drill a 3/32" hole to secure the white ground wire. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into any exposed surfaces. Clean dirt and rustproofing from the area first, then secure the white wire using the eyelet and screw provided.
Drill a 3/32" hole for the white ground wire. Clean dirt and rustproofing from the area before drilling, then secure the wire using the eyelet and screw provided.
The T-One® T-Connector uses a 15 amp fuse. The fuse is installed in the yellow fuse holder provided with the kit and must be connected between the black 12 gauge wire and the vehicle's Positive (+) battery terminal.
From inside the vehicle, connect the black 12 gauge wire from the T-One® black box to the black wire from the vehicle using the supplied yellow butt connector. Route this wire either through a grommet and along the exterior frame, or follow the existing wiring along the thresholds into the engine compartment up to the battery. Avoid areas that may pinch or break the wire. At the battery, disconnect the Negative (-) cable first. Cut the fuse holder wire, attach the ring terminal to the vehicle's Positive (+) battery cable, and connect the other end of the fuse holder to the black 12 gauge wire using the yellow butt connector. Install the 15 amp fuse and reconnect the Negative (-) battery cable.
The T-Connector has four main wires: yellow wire (driver side taillight connection), green wire (passenger side taillight connection), white wire (ground connection to vehicle frame), and black wire (power connection to vehicle battery through a 15 amp fuse). The yellow and green wires tap into the existing taillight harness. The white wire is grounded to the vehicle frame using an eyelet and screw. The black wire connects to the vehicle's Positive (+) battery terminal through the fuse holder.
Yes, you can route the black 12 gauge wire through a grommet and along the exterior frame. However, you must be careful to avoid hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire. Alternatively, you can follow the existing wiring along the thresholds into the engine compartment up to the battery.
Mount the T-One® T-Connector's black box module on a flat surface in an out-of-the-way place to prevent damage or rattling. The location should not interfere with vehicle operation or access.
Secure the remainder of the T-One® T-Connector harness with the cable ties provided to prevent damage or rattling. Be careful to avoid any areas that would pinch, cut, or melt the wire. After securing the harness, replace the carpet and any other clips or panels that were removed during installation, being careful not to cut or pinch the wires.
All connections must be complete for the T-One® T-Connector to function properly. Test and verify the installation with a test light or trailer once installed. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition.
Do not exceed the lower of the towing manufacturer rating (including in your vehicle owner's manual) or the specific amperage ratings stated on the product. The manual does not specify the product's own amperage rating; refer to the product label or contact the manufacturer for this information.
Always wear safety glasses and use all safety precautions during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces. When routing wires, avoid hot pipes, heat shields, the fuel tank, or any areas that may pinch or break the wire. Read and follow all warnings printed on the vehicle's battery before connecting to the battery terminals.
Store the 4-Flat connector in the trunk area when not in use.
Overloading circuits can cause fires. Do not exceed the stated product ratings or the towing manufacturer rating (including in your vehicle owner's manual). Always respect the lower of the two amperage limits.
Yes, the T-One® T-Connector (part 118731-037) is designed for the Nissan Altima.
You need: Trim Panel Remover, 10mm Socket & Ratchet or Wrench, Drill with 3/32" bit, 1/4" Socket, Wire Crimpers, Wire Cutters, Philips Screwdriver, and Test-probe.
Yes, disconnect the vehicle's Negative (-) battery cable before connecting to the Positive (+) terminal. Reconnect only after the fuse holder is installed and the 15 amp fuse is in place.
Yes, you must drill a 3/32" hole for the white ground wire. Verify what is behind the surface before drilling to avoid damage.
The connector uses a 15 amp fuse installed in the yellow fuse holder provided. This fuse protects the connection between the black 12 gauge wire and the vehicle's Positive (+) battery terminal.
The black power wire is 12 gauge (12 ga.). It connects from the T-One® black box to the vehicle's Positive (+) battery terminal through a 15 amp fuse.
Test with a test light or trailer once installed. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition. All connections must be complete for proper function.
Do not exceed the lower of the towing manufacturer rating (in your vehicle owner's manual) or the specific amperage ratings on the product. Refer to the product label for its amperage rating.
Total for 4 items:
$157.94$163.45
Jennifer
Ordered online. Shipment arrived on time and with all the correct parts. Great customer service and friendly staff. Also, pricing was great!
May 22, 2023
