| BA15S, BAY15D, brake light, turn signal |
1156 & 1157 LED Bulbs — BA15S & BAY15D Replacement Manufacturer
Zhishan's 1156 and 1157 LED bulbs are direct replacements for the most common automotive single-contact (BA15S) and dual-contact (BAY15D) bulb applications.
The 1156 single-filament bulb is widely used for reverse lights, rear turn signals, and side markers.
The 1157 dual-filament bulb is standard for combined brake and tail light functions across thousands of vehicle models worldwide.
Our LED replacements deliver significantly higher luminosity than original incandescent bulbs while consuming 80% less power.
Built with high-quality SMD or COB LED chips, each bulb undergoes aging tests of 48+ hours before shipment.
Key Specifications:
- 1156 Base: BA15S (single contact)
- 1157 Base: BAY15D (dual contact)
- Input Voltage: 12VDC / 24VDC
- Available Colors: White, Amber, Red
- Life Span: 30,000+ hours
- Certifications: CE, RoHS
Suitable for: brake lights, tail lights, reverse lights, turn signals, DRL. OEM/ODM welcome. Free sample available upon request.
The key difference lies in the base and functionality.
1156 LED bulb: Single-contact, single-filament, used for single-function lights (turn signal, reverse, brake).
1157 LED bulb: Dual-contact, dual-filament, used for dual-function lights (tail/brake combo, running/stop lights).
No. 1156 bulbs have one contact point, while 1157 bulbs have two. Their electrical configuration is different, so they cannot be swapped even if the size looks similar.
Many cars, trucks, motorcycles, RVs, pickup trucks, and trailers use these bulbs.
Typical applications include:
● Turn signal lights
● Brake lights
● Tail lights
● Reverse lights
● Parking/running lights
Always check your owner’s manual or use a bulb guide to confirm compatibility.
Yes. LED 1156/1157 bulbs are fully compatible replacements as long as you choose the correct base type. LEDs offer:
● Brighter output
● Lower power consumption
● Longer lifespan
● Faster response time (safer braking signals)
In some vehicles, especially newer ones, LEDs may cause:
● Hyper-flashing
● Error messages
● Flickering
Installing a load resistor or CANbus decoder usually solves the issue.
Check:
● Your original bulb base
● Your vehicle manual
● A bulb compatibility chart
If your light socket has two functions in one bulb, you need 1157.
If it performs only one function, you need 1156.
● White → Reverse lights
● Red → Brake/tail lights
● Amber/Yellow → Turn signals
Using the correct color ensures proper visibility and meets road regulations.
Most high-quality LED bulbs are designed with IP65–IP68 waterproof ratings, making them suitable for outdoor and automotive environments.
LED bulbs can last 30,000–50,000 hours depending on quality, heat dissipation, and usage conditions. This is significantly longer than halogen bulbs.
We supply high-quality automotive LED lighting designed for stable performance and long-term use. Our strengths include:
● Reliable bulk production for OEM/aftermarket sourcing
● Uniform product quality with multi-step testing
● Competitive prices for wholesalers and importers
● Fast delivery and responsive technical support
These advantages help our partners maintain consistency and build stronger market competitiveness.
If you’re sourcing 1156 LED or 1157 LED bulbs for retail, distribution, or workshop use, our team can provide product recommendations, technical specs, and volume-based quotations.
Contact us today to get pricing, samples, or OEM support.
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