Old Britts – Lucas Bullet Type Terminal Installation
Download the complete PDF version using the green download button at the top right of this page for an Old Britts technical article covering Lucas bullet type terminals and their correct installation. This practical electrical guide shows how the solder-style terminals are prepared, fitted to the wire and finished neatly, making it useful for classic motorcycle wiring repairs, harness restoration and period-correct electrical work.
The article begins by identifying the Lucas bullet terminal itself, then explains how to trim approximately 3/8 inch of insulation from the wire before placing the terminal in position. It notes that a small amount of wire should project from the end of the terminal before soldering begins.
The final section shows the soldering method, with the terminals held upright in a vise while heat is applied to the metal body so solder flows down through the end opening and secures the wire internally. Once the joint is complete, any excess wire and solder are filed smooth from the tip and outside of the terminal to leave a clean finished connection.
Contents Include
- Lucas bullet type terminal identification
- Classic motorcycle electrical wiring reference
- Wire insulation trimming guidance
- Correct terminal positioning before soldering
- Using a vise to hold terminals upright
- Applying heat directly to the terminal body
- Allowing solder to flow into the terminal opening
- Securing the wire inside the bullet terminal
- Finishing the soldered terminal cleanly
- Filing excess wire and solder after installation
