In addition to the 3250 speedo, the 3991 also incorporates a digital temperature gauge and a set of warning lamps in a neat package.

• Max temperature
• 2 trip meters and odometer
• Maximum and Average speeds
• Riding timer and hour meter
• 12/24 hour clock
• Voltmeter 8-25v
• Bar Tachometer 250-8000 / 500-16000 RPM
• Digital Tachometer 10-19900 RPM
• Speedometer 2.4-399.9 KMH / 248.5 MPH
• Digital temperature meter 50-180C / 122-356F
• Bar temperature meter, 1-7 bar graphic
• Bar fuel meter works with 100 / 250 / 500 ohm senders
  only displays if sender is connected
• Warning lamps available as follows:
  • ACE-3994: Indicators, Main Beam, Sidelights, Oil, Neutral, Rear Fogs, Brake failure