LED Autolamps 1157RM Bayonet Globes Blister Single

Dual-Brightness BAY15D LED Globe 380lm Stop, 125lm Tail, CANbus Compatible, 50,000 Hour Lifespan.

---

Product Overview

The LED Autolamps 1157RM is a direct BAY15D bayonet replacement LED globe for stop/tail lamp applications, delivering 18 high-brightness SMD LEDs across two distinct brightness levels 380 effective lumens for the stop function and 125 effective lumens for the tail function. Fitting directly into standard BAY15D (1157-format) globe holders without modification, it replaces traditional incandescent stop/tail globes with a longer-lasting, lower-draw LED equivalent.

CANbus compatible and fitted with 32V over-voltage protection, the 1157RM suits both modern vehicles with CANbus load-monitoring systems and classic or commercial vehicles on 12V or 24V supplies. The cool white 6500K output provides a crisp, high-contrast stop light activation compared to the warm yellow tone of standard incandescent globes. Sold individually as a blister single one globe per pack.

---

Key Specifications

• Part number: 1157RM
• Fitting: BAY15D bayonet (1157 format — dual contact, offset pins)
• Function: Stop / Tail lamp (dual brightness)
• LED count: 18 high-brightness SMD LEDs
• Stop lumens: 380lm effective
• Tail lumens: 125lm effective
• Colour temperature: 6500K (cool white)
• Voltage: 12V – 24V
• Current draw: 0.43A @ 12V
• CANbus compatible: Yes
• Reverse polarity protected: Yes
• Over-voltage protection: 32V
• Lifespan: 50,000 hours
• Pack quantity: 1 (blister single)
• Dimensions: Not specified — confirm with LED Autolamps
• Weight: Not specified — confirm with LED Autolamps
• Warranty: Not specified — confirm with LED Autolamps

---

Features & Benefits

• Dual-Brightness Stop/Tail Function — Operates at two distinct brightness levels matching the standard BAY15D dual-filament incandescent globe: 125lm for the constant tail/running light function and 380lm for the high-intensity stop light activation. The voltage differential between the two functions triggers the corresponding LED brightness level automatically.
• CANbus Compatible — Designed to work with modern vehicle CANbus systems that monitor globe circuit resistance and will trigger a warning light if they detect the lower current draw of a non-compatible LED globe. The 1157RM's CANbus-compatible design suppresses these false warnings in most applications.
• 18 High-Brightness SMD LEDs — Surface mount device LEDs deliver a bright, even output across the globe face — providing better coverage of the lamp housing reflector compared to single-point LED globe designs.
• 6500K Cool White Output — Produces a crisp, daylight-white stop light activation — improving contrast and visibility compared to the warm yellow of standard incandescent globes, particularly in direct sunlight conditions.
• 50,000 Hour Lifespan — An expected LED service life of 50,000 hours represents a significant maintenance reduction over incandescent globes — particularly valuable in vehicle fleets, caravans, and trailers where globe replacement requires panel or lens access.
• 32V Over-Voltage Protection — Built-in protection against voltage spikes and over-voltage events up to 32V — safeguarding the LED circuit from the transient voltages that can occur in automotive electrical systems, particularly on 24V commercial vehicles.
• Reverse Polarity Protected — Internal reverse polarity protection prevents globe failure if the globe is inserted or the vehicle wiring is connected in the incorrect polarity — a practical protection for installation and servicing.
• 12V – 24V Dual Voltage — Compatible with both 12V passenger and recreational vehicles and 24V commercial truck and heavy vehicle electrical systems.
• Direct BAY15D Bayonet Fit — Installs using the same twist-and-lock procedure as a standard incandescent globe — no wiring modification, adaptor, or special fitting required.

---

Technical Specs

---

Compatible With / Goes Well With

Compatible lamp fitting:

• BAY15D bayonet globe holders (1157 format — dual contact with offset pins)
• Stop/tail light lamp assemblies using BAY15D globes

Important fitment note: BAY15D and BAY15S are different fittings. BAY15D is the dual-contact (dual-filament equivalent) globe with offset bayonet pins — used for stop/tail functions. BAY15S is the single-contact globe. Confirm your lamp holder is BAY15D before purchasing.

Suitable applications:

• Car, SUV, and ute stop/tail light globe replacement
• Caravan and trailer stop/tail light globe replacement
• Commercial vehicle stop/tail light globe replacement (12V and 24V systems)
• Truck marker and tail light globe replacement where BAY15D is fitted

Pairs well with:

• LED Autolamps BAY15D and other LED globe replacements for a full-vehicle LED upgrade
• LED Autolamps combination stop/tail lamp assemblies
• LED load resistors / Canbus modules if CANbus compatibility is insufficient for a specific vehicle application

---

Weight

Not specified by supplier.

---

Frequently Asked Questions

Is the 1157RM a direct replacement for a standard 1157 or BAY15D globe?

Yes. The 1157RM uses the same BAY15D bayonet fitting as the standard 1157-format incandescent globe — it installs with a straight push and twist into a standard BAY15D lamp holder. No adaptor or wiring modification is required.

What is CANbus compatibility and do I need it?

Modern vehicles monitor globe circuit current to detect blown globes. An LED globe draws significantly less current than an incandescent, which can trigger a false "globe blown" dashboard warning. CANbus-compatible globes like the 1157RM are designed to draw sufficient current to satisfy the monitoring system and prevent false warnings. If your vehicle does not have globe load monitoring, CANbus compatibility has no downside.

What is the difference between BAY15D and BAY15S?

BAY15D (double contact) is the dual-filament equivalent globe with offset bayonet pins — used for combined stop/tail functions where two different brightness levels are required. BAY15S (single contact) is a single-filament globe for single-function applications. The 1157RM is BAY15D — confirm your lamp holder type before purchasing.

Does this globe work on 24V commercial vehicles?

Yes. The 1157RM operates across 12V to 24V and includes 32V over-voltage protection — suitable for both 12V passenger and 24V commercial vehicle applications.

How does the 380lm stop versus 125lm tail brightness compare to a standard incandescent globe?

A standard 1157 incandescent globe typically produces approximately 400lm on the stop filament and around 100lm on the tail filament. The 1157RM's 380lm stop output and 125lm tail output are closely matched to the incandescent equivalent in functional terms, with the added benefits of longer lifespan, lower current draw, and faster illumination response.