• 3 metre wiring harness for LED bars
  • LED light bar wiring harness 12V 40A
  • Wiring harness kit for 2 LED lights
  • 2 lights wiring harness with 40A relay
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AutoSmart Parts

LED Light Bar Wiring Harness, 12V 24V 40A Kit for 1 or 2 Lights with Switch and Relay

LED light bar wiring harness 12V or 24V, 40A capacity for up to 2 LED lights. Switch, 40A relay, 15A blade fuse, 3m cable. Universal 12V vehicle fit.

$43.99 AUD
$56.99 AUD $43.99 AUD
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check Powers 1 or 2 LED light bars up to 180W each lead
check 40A power relay with high quality copper coil
check 15A inline blade fuse for overcurrent protection
check Flexible button switch with green and red indicators

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Specifications

Cable length: 3 metres (10 ft)
Current rating: 40A
Voltage: 12V or 24V
Wire material: Tinned wire, XLPE/XL PVC insulation
Relay: 40A power relay with copper coil
Fuse: 15A inline blade fuse
Switch: Flexible button on off, 10,000+ press cycles, green and red LED indicators
Load per lead: Up to 180W

Compatible With

Vehicles: 12V (default) and 24V battery vehicles: cars, jeeps, ATVs, UTVs, motorcycles, ships, yachts, trailers
Light types: 7 to 52 inch LED light bars, work lights, driving lights, fog lights
Note for 24V: Contact us to confirm 24V variant availability if needed

What’s Included / Care Instructions

What's included (varies by variant):
• 3m wiring harness (1 or 2 leads depending on variant)
• 40A power relay
• 15A inline blade fuse
• On off switch with adhesive backing
• Remote control (remote variants only)

Care:
• Route cable through grommets to avoid chafing
• Keep relay and switch in dry locations
• Check fuse first if lights stop working

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Install Guide

1. Disconnect Battery

Disconnect the negative battery terminal before any wiring work to prevent shorts.

2. Wire the Relay

Mount the relay near the battery. Connect 30 to battery + (fused), 87 to LED output(s), 85 to switch, 86 to ground.

3. Mount Switch and Test

Stick the button switch on your dash. Route output cables to LED lights. Reconnect battery and press the switch to test.

Common Questions Before You Buy

1 lead or 2 leads, which do I need?
Choose 1 lead for a single LED light bar. Choose 2 leads to power two separate LED bars or one bar plus auxiliary lights from the same switch.
What's the remote variant for?
The remote control variants add a wireless remote so you can turn lights on or off without reaching the dashboard switch. Useful for trail use or when the switch is hard to reach.
What size LED bar will it run?
Each lead handles up to 180W of LED lighting. Covers most 7, 10, 12, 20, 30, 40, 50, 52 inch LED bars and combinations of work lights.
Will it work on 24V trucks or boats?
The standard variant is rated 12V. For 24V variants, contact us before ordering and we can confirm availability and compatibility.
Is 3 metres of cable enough?
Yes for most installs. 3m runs from battery to bullbar or roof rack on most 4WDs and SUVs. For larger trucks consider an extension cable.