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2004 - 2010 Toyota Sienna
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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.
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Yes, the 2004-2010 Toyota Sienna Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW17536) is designed to fit the 2004-2010 Toyota Sienna.
The 2004-2010 Toyota Sienna Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW17536) fits the following vehicles: 2004-2010 Toyota Sienna. Always verify your specific year, make, and model before ordering.
The 2004-2010 Toyota Sienna Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW17536) fits 2004-2010 Toyota Sienna models. The 2010 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2004-2010 Toyota Sienna Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW17536) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The T-Connector is a trailer wiring adapter for Toyota Sienna vehicles. It allows you to connect a trailer's electrical harness to your vehicle's existing taillight wiring. The T-Connector intercepts the vehicle's taillight signals (stop, turn, and tail lights) and routes them to a 4-flat connector for trailer use. The black converter box houses the electrical conversion circuitry and must be mounted on the passenger side of the vehicle.
Yes, the T-Connector (part 18304-037) is designed for Toyota Sienna vehicles. The installation instructions are specific to the Sienna's taillight assembly location, rear threshold design, and jack storage compartment configuration.
You will need: a 10mm socket and ratchet or 10mm wrench, a drill with a 3/32" drill bit, and a test-probe (test light). These tools are required to remove the taillight bolts, remove the threshold bolts, drill the ground wire hole, and verify the installation.
The T-Connector includes: a screw or cable tie for mounting the black converter box, cable ties for securing loose wires, an eyelet and screw for securing the white ground wire, and a 4-flat connector for storage in the rear cargo area when not in use.
The manual does not specify whether battery disconnection is required. Contact the manufacturer or consult your vehicle's owner's manual for guidance on electrical work safety procedures.
You must remove: both rear taillight housings (by removing two bolts per housing), the rear threshold (by removing three cargo bolts), and carefully pull back the driver's side trim panel. On the passenger side, open the jack storage compartment to access the taillight assembly openings. Vehicle options vary; if equipped with a rear speaker cover, remove it carefully as screws or clips may come loose during panel removal.
The T-Connector uses two separate harnesses with different colored wires. First, route the harness with the green wire from inside the vehicle through the taillight opening on the passenger side. Disconnect the vehicle's taillight connector (being careful not to damage the locking tabs) and plug the T-Connector's green-wire harness between the separated halves. Repeat this process with the yellow-wire harness, routing it across the vehicle under the threshold cover. Both connections must be complete for the T-Connector to function properly.
Yes, drilling is required. You must drill a single 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 the vehicle floor, bed, or any exposed surfaces. Choose a suitable grounding point near the connector, such as the vehicle's frame or cross member. Clean dirt and rustproofing from the area before drilling.
Locate a suitable grounding point near the connector, such as the vehicle's frame or cross member. Do not drill into the vehicle floor, bed, or any exposed surfaces. Clean dirt and rustproofing from the area before drilling the 3/32" hole. Secure the white ground wire using the eyelet and screw provided.
The drill bit size is 3/32". This hole is used to secure the white ground wire using the eyelet and screw provided with the T-Connector.
Do not exceed the lower of your towing manufacturer's rating or these limits: maximum 2.1 amps per stop/turn light (maximum 1 per side), and maximum 4.2 amps for tail lights. Overloading the circuit can cause fires. Consult your vehicle's owner's manual and the T-Connector instruction sheet for additional information.
The T-Connector uses three colored wires: green wire (first harness to connect), yellow wire (second harness to connect), and white wire (ground connection). The green and yellow wires carry the taillight signals from the vehicle to the trailer connector. The white wire must be grounded to the vehicle's frame or cross member using the provided eyelet and screw.
Route the green-wire harness from inside the vehicle through the taillight opening on the passenger side. Route the yellow-wire harness across the vehicle under the threshold cover (removed in step 2), then out through the taillight opening on the passenger side. Tuck the yellow wire under the threshold panel and secure it. Secure all loose wires with the cable ties provided.
Mount the black converter box on the passenger side of the vehicle in an out-of-the-way location. Use the screw or cable tie provided to secure it. Secure all loose wires with cable ties to prevent them from interfering with vehicle operation.
Wear safety glasses during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle and personal injury. Do not drill into the vehicle floor, bed, or exposed surfaces. Be careful not to damage the locking tabs when disconnecting the vehicle's taillight connectors. All connections must be complete for the T-Connector to function properly. After installation, test and verify the installation with a test light or trailer before towing.
After installation is complete, test and verify the installation with a test-probe (test light) or by connecting a trailer and checking that all lights function correctly. All connections must be complete for the T-Connector to function properly. This verification ensures that the stop, turn, and tail light signals are correctly routed to the trailer connector.
The 4-flat connector is used to connect your trailer's electrical harness to the T-Connector when towing. When not towing, store the 4-flat connector in the rear cargo area of your vehicle.
Connect the green-wire harness first (steps 5-6), then connect the yellow-wire harness second (step 7). Both harnesses must be fully connected for the T-Connector to function properly. The green wire is routed from the passenger side, and the yellow wire is routed across the vehicle under the threshold cover before exiting through the taillight opening.
Carefully pull back the driver's side trim panel, being careful not to break any clips or tabs. If the vehicle is equipped with a rear speaker cover, pull the panel back carefully as screws or clips holding the cover may come off during panel removal.
When disconnecting the vehicle's wiring harness connector from the taillight assembly, be careful not to damage the locking tabs. These tabs keep the connector secure, and damaging them could prevent proper reconnection.
The T-Connector is designed for Toyota Sienna vehicles only.
Remove both rear taillight housings, the rear threshold, and pull back the driver's side trim panel. Open the passenger side jack storage compartment to access the taillight assembly openings.
The green and yellow wires carry taillight signals from the vehicle to the trailer. The white wire is the ground connection and must be secured to the vehicle's frame or cross member.
The BRAKE mate is a trailer brake control system that allows you to control trailer brakes from your vehicle. It connects to your vehicle's electrical system and includes a brake control unit that mounts under the dash, circuit breakers for power management, and a prewired connector that attaches to your trailer.
The manual does not specify which vehicle makes, models, or years are compatible with the BRAKE mate. Contact Cequent Towing Products technical service at (888) 521-0510 or consult a fitment database to confirm compatibility with your specific vehicle.
Yes. Step 4 of the installation instructions requires connecting the 4-pole flat connector to the vehicle's connector, which means your vehicle must already have a 4-pole flat connector. If your vehicle does not have one, the BRAKE mate cannot be installed using these instructions.
The kit includes: 1 prewired connector, 1 heavy duty flasher, 1 20 amp circuit breaker, 1 40 amp circuit breaker, 5 #10 G-ring connectors, 2 3/8" G-ring connectors, 5 Scotch locks, 8 self-tapping screws, and 6 wire tie straps.
The manual does not specify required tools. However, based on the installation steps, you will likely need a drill (to create a firewall hole if one does not exist), wire strippers, a screwdriver (for self-tapping screws), and possibly a crimper or pliers for ring connectors. Contact technical service at (888) 521-0510 for a complete tool list.
The manual does not specify whether the battery must be disconnected before installation. Contact Cequent Towing Products technical service at (888) 521-0510 for safety guidance before beginning work.
Mount the bracket for the round connector on the bumper if that is where you intend to install it. Some hitches have built-in brackets, so check your hitch first before mounting a separate bracket.
Mount the brake control unit under the dash onto something firm. The unit must be securely fastened to a solid surface.
Mount the 2 circuit breakers (20 amp and 40 amp) end to end on the firewall within reach of the BLUE/BLACK cable. Secure them with the self-tapping screws supplied in the kit.
You may need to drill a hole through the firewall to run the BLUE/BLACK 2-strand wire from the engine bay into the cab. Look for an existing spot first; if none is available, drill a hole and seal it with a rubber grommet or silicone to prevent water and debris from entering the cab.
Some hitch brackets may need to be cut to allow the various connectors to pass through. Check your specific hitch bracket during installation; if it blocks connector passage, you will need to cut it.
Yes. In step 9, you must cut the black wire to create two open ends. These ends are then fitted with ring connectors and attached to the 40 amp and 20 amp circuit breakers respectively.
WHITE = ground wire; BLUE/BLACK = 2-strand power and trailer brake wire (runs from rear connector to front of vehicle and through firewall); RED = power wire from brake control unit; BLUE = trailer brake wire from brake control unit; GREEN = wire from brake control unit to brake switch.
Connect the WHITE ground wire to the frame of the vehicle. This provides the ground connection for the system.
Run the BLUE/BLACK 2-strand wire along the frame rail to the front of the vehicle, avoiding the exhaust, axles, and brake cables. Secure it with the plastic tie straps supplied. Then run it up the firewall, avoiding the steering mechanism, and secure it with ties.
Split the BLUE/BLACK 2-strand wire down the middle. Connect the RED (power) wire of the brake control unit to the BLACK wire using a Scotch lock. Connect the BLUE (trailer brake) wire of the brake control unit to the BLUE wire using a Scotch lock. Connect the WHITE wire of the brake control unit to the ground on the vehicle body. Connect the GREEN wire of the brake control unit to the inactive side of the brake switch.
Run a heavy gauge wire from the battery or equivalent power source to the battery side of either circuit breaker. Attach a #10 G-ring connector to one end of the wire. Then split a wire off this main wire to the 20 amp breaker using a Scotch lock and attach a #10 G-ring connector to the end of this wire. Alternatively, you can run a jumper between the two breakers.
The circuit breakers protect the electrical system. The 40 amp breaker is connected to the auxiliary side of the wire going to the rear connector. The 20 amp breaker is connected to the auxiliary side of the wire going through the firewall to the brake control unit.
The heavy duty flasher is a replacement turn signal flasher. If your turn signals blink too fast after installation, replace your vehicle's original turn signal flasher with the one supplied in the kit.
After attaching the round connector with self-tapping screws, test the connector for: running lights, brake lights, turn signals, and hot wire (power). Note that the brake control output cannot be tested unless a trailer is connected to the connector.
If the turn signals are blinking too fast after installation, replace the turn signal flasher with the heavy duty flasher supplied in the BRAKE mate kit.
After drilling a hole through the firewall to run the BLUE/BLACK wire into the cab, seal the hole with a rubber grommet or silicone to prevent water and debris from entering the vehicle.
When running the BLUE/BLACK 2-strand wire along the frame rail and up the firewall, avoid the exhaust, axles, brake cables, and steering mechanism. These components can damage the wire or be damaged by it. Secure the wire with the supplied plastic tie straps.
Your vehicle must have a 4-pole flat connector. Contact Cequent Towing Products at (888) 521-0510 or check a fitment database to confirm compatibility with your specific make, model, and year.
The kit includes a prewired connector, brake control unit, 20 amp and 40 amp circuit breakers, 5 #10 G-ring connectors, 2 3/8" G-ring connectors, 5 Scotch locks, 8 self-tapping screws, 6 wire tie straps, and a heavy duty flasher.
You may need to drill a hole through the firewall to run the brake wire into the cab if an existing hole is not available. The hole must be sealed with a rubber grommet or silicone.
Connect WHITE (ground) to frame, RED (power) to BLACK wire, BLUE (trailer brake) to BLUE wire, GREEN to brake switch, and run BLUE/BLACK from rear connector through firewall to brake control unit.
Test for running lights, brake lights, turn signals, and hot wire (power). Brake control output cannot be tested without a trailer connected. If turn signals blink too fast, replace the flasher with the one supplied.
Avoid routing the BLUE/BLACK wire near the exhaust, axles, brake cables, or steering mechanism. Secure all wires with the supplied plastic tie straps.
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2004 - 2010 | Toyota Sienna | — |
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