Double Contact 15mm BA15D Bulb Adaptor – Bayonet Base Connector

This adaptor is designed for bulbs with a BA15D bayonet base — a 15 mm diameter double-contact bayonet with two contact points on the base and two parallel side pins.

Key Features

• 🔌 Type: BA15D (15 mm double contact) bulb adaptor

• 💡 Adaptor for: Double contact bayonet bulbs used in many 12 V/24 V lighting systems

• ⚓ Versatile use: Suitable for boat, caravan, automotive and household applications

• 🛠️ Simple installation: Easy to use in existing bulb holders or wiring setups

• ⚡ Double contact: Two contacts for bulbs that require both electrical connections on the base

What Is a BA15D Base?

BA15D is a 15 mm bayonet fitting with double contact points at the base and parallel locating pins on the sides. This base type is common for many automotive, marine and signalling bulbs where dual filament operation or reliable connection is needed.

Applications

✔ Marine lighting & cabin lights
✔ Caravan and trailer lamps
✔ Automotive stop/tail and indicator lights
✔ Workshop and equipment lighting
✔ LED conversion adapters (where compatible)

Includes

1 × Double Contact 15 mm BA15D Bulb Adaptor