LED Bulb Upgrade Kit (Negative Earth) – Sprite Mk1 Frogeye

What is this kit?

This LED bulb upgrade kit converts the exterior and interior lighting on a Sprite Mk1 Frogeye to warm white LEDs. It is supplied as a matched set for cars running a negative earth electrical system and includes the correct indicator relay for LED operation.

Key benefits

• Improved visibility: clearer brake, indicator and sidelights.
• Lower current draw: reduced electrical demand compared with filament bulbs.
• Warm white output: maintains a period-appropriate appearance.
• Stable indicators: LED-compatible relay included.

Limitations: Dash dimming effect may be reduced. Poor earth connections must be addressed for reliable LED operation.

Will it fit my Sprite?

Yes – this kit is intended for the Sprite Mk1 Frogeye running a negative earth system.

• Suitable for standard Mk1 exterior and interior lamp holders.
• Not suitable for positive earth cars (use XLTG240).
• Does not include headlamp bulbs.

What’s included

• Warm white LED bulbs for exterior lighting.
• Warm white LED bulbs for interior and instrument lighting.
• LED-compatible indicator relay for negative earth systems.

Technical details

• Colour temperature: warm white.
• Fittings: bayonet-style replacements.
• Electrical: negative earth only.

Installation notes

• Replace bulbs directly in existing holders.
• Swap the indicator relay for the supplied LED-compatible unit.
• Clean holders and earth points as part of installation.

Why choose this kit?

This kit ensures compatibility by supplying bulbs and relay matched for negative earth operation, avoiding common LED indicator issues.

FAQs