Description

Overview

21W 12V load resistor restores electrical load on LED lamp circuits where late model vehicles show bulb failure warnings. The resistor draws the same current as a 21 watt globe, so it helps the vehicle lighting system recognise the circuit load correctly. Use this twin pack when one lamp function on each side needs load correction.

Features

• 21 watt dummy load resistor for 12V lighting circuits.
• 8Ω resistance to replicate a 21 watt globe load.
• Twin blister pack suits left and right side circuit correction.
• IP67 rating supports exposed vehicle and trailer electrical work.

Specifications and Materials

This 21W 12V load resistor uses an aluminium housing with 18AWG cable and 10cm leads on each side. It suits 12V systems only, and the pack includes crimp terminals for connection into the lamp input wiring. The resistor carries a 5-year warranty and uses a compact body for tight mounting areas. Part number: LR21W-12/2. Official LED Autolamps spec sheet details the wiring layout, housing material and electrical ratings.

Compatibility and Fitment

Match this part to 12V LED lamp circuits that trigger light failure warnings after a globe-style lamp changes to LED. You may need one resistor per function on each side, so check whether the warning relates to indicator, brake, tail or another lamp function before ordering. Wire the resistor between the lamp input wires, not through the chassis, because a poor earth can cause lighting faults.

Compliance and Safety

Mount the resistor to a metal surface before use. During operation it can reach up to 170°C, so keep it away from plastic, hoses, painted panels and heat-sensitive materials. After fitting, inspect the wiring path, crimp joins and lamp operation before returning the vehicle or trailer to service.

Trailer Applications

Workshops use this 21W 12V load resistor when LED trailer lamps, vehicle lamp monitoring systems and mixed lighting repairs need a corrected load signal. It suits trailer electrical repairs where the lamp works, but the tow vehicle still reports a failure because the LED circuit draws less current than a globe.

Why Choose ICS Trailers

ICS Trailers can help match load resistors with LED lamps, wiring parts and trailer electrical hardware for the same repair. For related wiring, lamps and trailer circuit parts, browse Electrical parts at ICS Trailers