AUXITO 3157 CANBUS Switchback LED Bulbs Pack of 2 Amber/White — Built-in Resistor & Active Cooling

AUXITO 3157 switchback LED bulbs provide bright dual-color amber turn signals and white parking/DRL lighting in a single CANBUS-compatible 3157/3057/3457/4157 fitment.

These plug-and-play switchback bulbs combine high-output LED chips, an intelligent CANBUS driver, and active cooling to replace traditional halogen 3157-style bulbs. They switch from white (parking/DRL) to amber (turn signal) instantly when you activate the indicator, offering clearer visibility and a modern appearance without rewiring for most vehicles.

How bright are these bulbs compared with stock halogen 3157 lamps?

Each pair delivers a significant increase in light output thanks to high-brightness LED chips engineered for automotive use. AUXITO rates the set at roughly 600% brighter than standard halogen equivalents, improving signal visibility in daylight and adverse weather.

• Approximate total output: 4000 lumens per pair (combined)
• High-brightness LED chips for stronger white DRL and vivid amber signals
• Sharper, more noticeable light pattern vs. diffuse halogen glow

Will these work with my car’s CANBUS system without error codes?

These bulbs include a built-in intelligent IC driver and higher wattage design intended to reduce hyper-flash and error messages on most modern vehicles. They are compatible with the majority of CANBUS systems, but a small number of cars with unique electrical setups may still need external load resistors or additional adapters.

• Designed to be plug-and-play with 98% of vehicles' systems
• Built-in resistor/IC helps prevent radio interference and hyper-flash
• Customer support available if special CANBUS issues occur

How is heat managed to ensure long life for the LEDs?

Thermal control combines a solid aviation-grade aluminum body and an active cooling fan that diverts heat away from delicate components. Effective heat dissipation extends usable life and maintains steady brightness over time.

• Aviation aluminum housing for efficient heat conduction
• 12,000 RPM turbo cooling fan to maintain safe operating temperature
• Estimated service life up to 50,000 hours under normal conditions

Which functions and bulb sizes do these AUXITO switchbacks support?

These switchback LEDs perform dual roles: amber for turn signals and white for parking lights or daytime running lights. They are designed to fit common 3157-series sockets and compatible cross-fitments used in many vehicles.

• Fits: 3157, 3157A, 3057, 3057A, 3457, 3457A, 4057, 4157, 4157NA
• Dual-color operation without additional wiring in most installations
• Sold as a pack of two bulbs for left/right applications

Who is this for: drivers who want an easy LED upgrade for clearer turn signaling and modern white parking/DRL illumination without major modification. These bulbs suit car and truck owners seeking higher-brightness, CANBUS-aware replacements for 3157-style sockets, plus DIY installers who want a plug-and-play solution with vendor support for rare compatibility issues.