Stewart Warner Heavy Duty™ Diesel Tachometer (electrical): Scale: 0-3500 RPM, Diameter: 3 3/8", Volt/Watt/Current: 12 V, Alternator Application / Selectable Ratio .5, 1, 1.5, 2, Bezel/Finish: Black, Style: Heavy Duty™
- Alternator signal tachometer.
- 12V or 24V light kits are sold separately. These are available for 5/8” and 1/2” light holes, in single-wire (grounds to gauge case) or two-wire (when ground cannot be made via gauge case) configurations.
Heavy Duty™ Instruments
- Bold white graphics on black face dials with white pointers
- Black raised bezel with distinctive brushed bright rim
- Patented light ring for better night-time readability
- Mechanical gauges feature Bourdon tube mechanisms while electric gauges feature Bi-Torque™ mechanisms
- Matching 5" speedometer and tachometer available