Ski-Doo Grand Touring 500 Brake Bulb Size

Additional Notes

• The Ski-Doo Grand Touring 500 uses the 1157 bulb for its brake light across all listed model years from 1996-2003, with no variation in bulb type across that span.
• The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope. One filament operates at 21W for the brake or turn signal function, while the other operates at 5W for the running light function.
• The 1157 uses a BAY15d bayonet base, which features two offset pins at different heights on the base. This offset pin arrangement is a deliberate design feature that prevents the bulb from being inserted in the wrong orientation, ensuring each filament connects to the correct circuit.
• The 1157 is rated at 12 volts, which is consistent with standard 12V electrical systems found in powersports vehicles.
• The 1157 conforms to ANSI standards and is recognized across both the United States and Canada, placing it within a widely distributed and standardized bulb classification system.
• Because the 1157 has a dual-filament design with an offset bayonet base, it is not directly interchangeable with single-filament bulbs such as the 1156, even though the 1156 shares a similar physical base style. Substituting a single-filament bulb would result in the loss of one lighting function.