Upgrade your classic vehicle’s original mechanical voltage stabiliser with the plugpal 5V Solid State Voltage Stabiliser, designed specifically for negative earth systems. This modern electronic replacement eliminates the inaccuracies and wear issues associated with old bi-metallic contact breaker units used in many 1950s, 60s and 70s vehicles.

Ideal for classic models including:

• Ford Escort Mk1
• Ford Capri

…and many other classic Ford and period vehicles requiring a regulated 5V supply for dashboard gauges.

Why Choose a 5V Solid State Voltage Stabiliser?

Original contact-breaker stabilisers fluctuate with temperature, vibration and age. The plugpal 5V stabiliser uses modern semi-conductor technology to provide:

• Stable, constant 5V DC output
• Accurate fuel and temperature gauge readings
• Consistent performance regardless of engine revs or electrical load
• Greater reliability than original mechanical units

Keep your classic gauges reading correctly with dependable, modern voltage regulation.

Easy Installation – Direct Replacement Design

• Three-wire setup:
  • Red – +12V input
  • Yellow – Regulated +5V output
  • Black – Ground (chassis earth)

Installation guide:

• Connect the black wire to vehicle chassis ground
• Connect the red wire to the original ‘B’ terminal 12V supply
• Connect the yellow wire to the original ‘I’ terminal (gauge feed)

Supplied with:

• Male 6.3mm spade terminal on +12V input
• Male 6.3mm spade terminal on +5V output
• Adapter lead included if a female output connection is required

Custom terminal configurations may be available on request.

Technical Specifications

• Output Voltage: 5V DC (regulated, +- 0.5V)
• Vehicle Compatibility: Negative earth systems only
• Output Current Range: 5mA – 1A
• Components: Constructed with a LM2940T-5 voltage regulator and the manufacturer recommended capacitors on a custom circuit board
• Recommended Load: Up to two gauges (fuel and temperature)
• Construction: Vented metal casing acting as heatsink with regulator mounted on thermal paste
• Connections: Professionally crimped (not soldered) to prevent vibration-related stress fractures
• Protection: Adhesive-lined heat shrink for improved moisture resistance
• Wiring length: For flexible positioning, approx 100mm

Designed specifically for automotive environments with high vibration.

Important Information

• This version outputs 5V only.
• Suitable for negative earth vehicles only (not compatible with positive earth systems).
• If being installed not using the original loom stabiliser connections, a fused 12v supply is advised.

Reliable Voltage Regulation for Classic Cars

Whether you’re restoring a classic Ford or improving gauge accuracy in your vintage vehicle, the plugpal 5V Solid State Voltage Stabiliser offers a durable, modern solution while maintaining factory-style wiring integration.

Ensure stable, accurate gauge readings in your classic car with a trusted solid state upgrade.