Yamaha - Oil Lamp Lead 16.4 Electrical Indicator Component 6R3-82521-50-00. Overview. This is one of those small wiring pieces that can cause big confusion if it starts acting up. I've seen engines throw warnings-or worse, not warn at all-just because of a bad lead. When this connection is solid, your oil system communicates clearly and you know exactly where things stand. It's not complicated, but it's something you want working right every time you fire up.. Key Features. • Reliable Signal Transmission - Ensures accurate communication to the oil warning light system.• 16.4 Length Design - Provides proper reach for shorter, clean rigging setups.• OEM Connector Fitment - Matches factory plugs for secure and dependable connections.• Marine-Grade Durability - Built to withstand vibration, moisture, and long-term use.. Engine & Boat Compatibility. Designed for Yamaha outboard engines equipped with oil warning and monitoring systems. Commonly used across a range of Yamaha outboards where a