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2025 Mazda CX-70
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Always the correct part
We know our products
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Includes mounting hardware & plug & play harness
Knob outside diameter is 1.9"
Patent #10,960,860
Includes mounting hardware & plug & play harness
Warranty: Limited Lifetime
Installation Time Exact (Minutes): 0
The CURT Spectrum trailer brake controller provides powerful brake operation while maintaining a clean, consistent OE look and feel on the dash of your vehicle. It is comprised of a main module and a separate user interface. This interface is a simple rotary knob with a push-button and ten tri-color LEDs to control and monitor all trailer brake activity. It also features a triple-axis accelerometer for highly responsive, smooth stops on any grade. The separated module and interface of the Spectrum brake controller allow it to integrate with the vehicle unlike any other. The main module can be mounted behind the dash and completely out of sight. The separate rotary knob provides a sleek, subtle interface that mounts on the dash of the vehicle wherever desired. It features ten LEDs with three colors each (red, green and blue) to indicate trailer brake activity and power adjustment. The rotary knob and integrated push-button allow for simple and effective operation of the control settings and manual adjustment. The Spectrum trailer brake controller offers superior safety and helps protect the life of your vehicle and trailer with its advanced triple-axis accelerometer. This integrated circuit detects the motion of the vehicle and trailer when making stops and applies the precise amount of brake power for maximum efficiency and effectiveness. The three axes of the circuit also enable the brake control to compensate when going up or down a hill. Like most CURT brake controllers, the Spectrum installs using one of our vehicle-specific quick plug harnesses. It also has automated leveling and calibration capabilities to simplify and speed up the installation process. The Spectrum trailer brake controller comes with mounting hardware for a complete installation.
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®.'
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Call 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2025 | Mazda CX-70 | — |
The 2025-2025 Mazda CX-70 CURT Venturer NEXT Time-Delay Trailer Brake Controller for 1-3 Axles #51116 (Part #CURTBC1958) fits the following vehicles: 2025 Mazda CX-70. Always verify your specific year, make, and model before ordering.
The 2025-2025 Mazda CX-70 CURT Venturer NEXT Time-Delay Trailer Brake Controller for 1-3 Axles #51116 (Part #CURTBC1958) fits 2025 Mazda CX-70 models. The 2025 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 2025-2025 Mazda CX-70 CURT Venturer NEXT Time-Delay Trailer Brake Controller for 1-3 Axles #51116 (Part #CURTBC1958) is designed to fit the 2025 Mazda CX-70.
The 2025-2025 Mazda CX-70 CURT Venturer NEXT Time-Delay Trailer Brake Controller for 1-3 Axles #51116 (Part #CURTBC1958) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Part 51530 is a brake controller wiring harness manufactured by Curt. It is a custom wiring harness designed to connect a brake controller to your vehicle's electrical system. The harness routes under the dash and integrates with the vehicle's factory wiring to enable trailer brake control functionality.
The manual does not specify which vehicle makes, models, or model years are compatible with part 51530. Contact Curt Manufacturing or your retailer with your vehicle's year, make, model, cab style, and bed length to confirm fitment before purchasing.
You will need a cutting tool to remove the tape securing the white housing under the dash. The manual lists this as the only tool required for installation.
The manual shows a hardware photo but does not itemise the contents. The product includes a custom wiring harness. You will also need a brake controller unit, which is referenced in Step 3 but not included with the harness.
The 51530 harness is installed under the dash. During installation, you will access the white housing located under the dash behind the vehicle accelerator pedal.
You will need to move the driver seat back to the rear-most position to access the white housing under the dash behind the accelerator pedal. Full removal is not mentioned in the manual.
Installation has three steps: (1) Move the driver seat to the rear-most position and locate the white housing under the dash behind the accelerator pedal. (2) Using a cutting tool, carefully remove the tape securing the housing, taking care not to cut the wires attached to the housing or the wires it is taped to. (3) Insert the custom wiring harness into the vehicle housing and brake controller, then follow the brake controller instructions for use and setup.
No drilling is required. A cutting tool is used only to remove the tape securing the white housing under the dash. You must be careful not to cut the wires attached to the housing or the wires the housing is taped to.
The manual does not specify a weight or towing capacity for the 51530 harness itself. However, you must not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. Refer to your brake controller documentation and vehicle owner's manual for specific capacity limits.
After installation, test for proper function by using a test light or by connecting a properly wired trailer. The manual does not provide detailed testing procedures; follow the brake controller instructions for use and setup.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. The manual does not specify an inspection interval.
Vehicle compatibility is not listed in the manual. Contact Curt or your retailer with your vehicle details (year, make, model, cab, bed length) to confirm fitment.
You need only a cutting tool to remove the tape securing the housing under the dash.
No. A cutting tool is used only to remove securing tape; no drilling, cutting of vehicle parts, or permanent modifications are required.
The manual does not specify a capacity. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. See your brake controller and vehicle documentation.
Test using a test light or a properly wired trailer. Follow the brake controller instructions for setup and use.
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