STEDI Smart Harness™ Plug & Play High Beam Wiring – Single Connector Driving Light Loom
STEDI Single Connector Plug & Play Smart Harness™ – High Beam Driving Light Wiring
- Regular price
- $30.00
- Regular price
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- Sale price
- $30.00
- Unit price
- / per
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Shipping & Returns
Turnaround
All orders are shipped within 1-2 weeks.
If a tracking number is provided by the shipping carrier, we will update your order with the tracking information. Please note that some orders may not have tracking numbers due to provider options.
Shipping Rates
The rate charged for the shipping of your order is based on the weight of your products, and your location. Before the final checkout page you will be shown what the cost of shipping will be, and you will have a chance to not place your order if you decide not to.
Delivery charges
What is Rural Delivery fee?
An estimated delivery charge will apply to customers ordering from rural areas. Prior to processing you order on checkout, an alert will appear that will advise customers to call MYTUFF4X4 to obtain an accurate cost of delivery. Please contact MYTUFF4X4 to see a list of Rural and Remote areas. Some areas may take longer due to the frequency of deliveries to the delivery Post code. Our system calculates this estimated price considering the total amount of time to process your order including: packaging, transit time to the delivery provider, and transit time to the delivery address.
When placing your order, we consider these factors when calculating the Estimated Delivery prices :
- Post code of the nominated delivery address.
- Transit Time: The amount of time it takes your order to leave our distribution centre and arrive at the local delivery carrier.
What additional fees may apply?
There may be circumstances that require additional payment by you if the conditions mentioned have not been met or you require special services outside of our standard delivery.
Back Orders
If an item goes on back order we will ship you the part of your order that is in stock. When the item becomes available we will ship you the rest of your order. You will not be charged any additional shipping and handling for the second shipment.
Delivery Insurance
Goods that are shipped on behalf of the client by Mytuff4x4 are not insured unless the client notifies us prior to delivery and pays for delivery insurance. Mytuff4x4 is not responsible for goods damaged in transit if insurance is not paid for by the customer prior to delivery.

The STEDI Single Connector Plug & Play Smart Harness™ is the ultimate high-beam-activated wiring solution for installing driving lights with zero cutting, soldering, or guesswork. Designed for fast, frustration-free installation, this harness uses the supplied HB3 (H3) and H4 adapters to instantly sync your driving lights with your vehicle’s high beam—simply unplug your factory headlight connector, plug in the adapter, and you're done.
The latest V2.0 Smart Harness™ automatically detects whether your vehicle uses a positive or negative switching system, making it compatible with notoriously difficult platforms such as Toyota, Ford Ranger, and Mazda BT-50 without any modification. Your driving lights activate only with high beam, while the included switch acts as a clean OEM-style isolator.
Built to STEDI’s signature quality standard, this kit includes a 40A relay, 30A fuse, UV-rated insulation, ribbed cable protection, and a heat-shrink-wrapped relay for long-term durability in harsh environments.
Harness Specifications
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Plug & Play high-beam activation via HB3 & H4 adapters
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V2.0 automatic polarity detection (positive/negative switching)
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Push-button ON/OFF isolator switch
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12V DC 40A switching relay
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12V DC 30A rated fuse kit
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UV-rated insulation and ribbed cable protectors
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DT connector for 1x light bar
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Includes complete installation instructions
Wiring Lengths
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2.4m: Relay → Switch
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2.0m: Driving Light connector → Relay
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2.0m: HB3/H4 Adapter → Relay
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Total cable length: 6.4m
Compatibility
HB3 and H4 connectors suit the most common headlight types found in popular vehicles.
For other vehicles, the harness can still be used with optional adaptors, including:
H1, H7, H9, Amarok, 200 Series LandCruiser, MQ/MR Triton, Isuzu D-MAX/MU-X, Ford Ranger/Raptor PX2 & PX3, Holden Colorado, Nissan Navara D23.
