Alady 3157 LED Load Resistor Kit — Dual 50W 6Ω Plug-and-Play Relay Harness to Stop Hyper-Flash & Error Codes

Alady 3157 LED Load Resistor Relay Harness Kit is a plug-and-play dual-resistor relay that prevents hyper-flashing, dashboard error codes, and flicker when replacing 3157-series bulbs with LEDs.

Switching to low-wattage LED bulbs can trigger a vehicle's on-board monitoring systems or cause flicker, misfires, or rapid flash rates. This Alady kit provides two 50W 6Ω load resistors wired through heavy-duty relays to simulate incandescent load and stabilize signal circuits for common 3157/3057/3457 sockets. The assembly arrives as a set of two pre-wired harnesses designed for straightforward installation without cutting factory wiring.

How does this harness stop error messages and flicker?

The harness inserts a resistive load and relay into the original circuit so the vehicle’s computer senses expected current draw. That prevents the warning codes and blinking caused by low LED wattage. The relay also supplies a clean, stable feed to avoid intermittent shut-offs.

• Dual 50W 6Ω resistors mimic incandescent load for both high and low beams.
• 18 AWG heavy-duty wiring and relay reduce voltage drop and instability.
• Pre-wired sockets plug into 3157-series bulb housings—no splicing required.

Will this fit my vehicle and which bulbs are supported?

The kit is built specifically for standard 3157-style sockets and is compatible with many aftermarket 3157, 3057 and 3457 LED replacements. It is not compatible with CK-type sockets, and vehicle electronics vary—so double-check your socket and system before ordering. Complex computerized lighting systems may still require additional decoding hardware.

• Designed for 3157/3057/3457 socket types only.
• Not suitable for CK-type or proprietary sockets without adaptation.
• Works for turn signals, parking lights, tail lights and some DRLs (may force DRL full-bright mode).

How do I install it safely and where should the resistors be mounted?

Installation is intended to be plug-and-play: connect the harness to the bulb socket and find an appropriate ground and power feed as shown in the vehicle’s wiring diagram. The resistors become very hot under operation, so mount them to a metal surface or heat-resistant area away from plastic, wiring loom, and fuel lines. Secure the harness away from moving parts and moisture.

• Plug harness into bulb socket and secure relay to chassis ground.
• Mount resistors on metal or heatproof surfaces to avoid melting hazards.
• Use zip ties and grommets to keep wiring clear of heat and moving components.

What improvements can I expect after installing this kit?

After installation you should see reduced or eliminated dash error messages, normal flash rates for turn signals, and removal of flicker or random shut-offs. For Daytime Running Lights, the resistor may hold the DRL at full-bright (high beam) level depending on vehicle wiring. Performance gains depend on vehicle make and aftermarket LED compatibility.

• Stops hyper-flashing and strobe effects on turn signals.
• Eliminates OBC error codes related to low bulb load detection.
• Stabilizes LED operation in cold conditions or auto-on systems.

Who is this for: This Alady kit is intended for vehicle owners and installers converting to 3157-series LED bulbs who encounter hyper-flash, flicker, or dashboard warning lights. It's aimed at DIY mechanics, professional installers, and anyone wanting a reliable, wired solution that avoids cutting factory harnesses. If your vehicle uses nonstandard sockets or highly integrated lighting systems, confirm compatibility before purchase or consult a professional installer.