background image
419
BIG TWIN
Mini Gauges include cable and mount clamp. 
Note: 39-0556 and 39-0437 includes left side speedometer drive. 39-0550 and 39-0561 feature indicator lights.
• Blue-High Beam
• Green-Neutral
• Red-Oil
• Yellow-Turn Signals
White Face
48 mm 
60 mm   Ratio 
Item 
Year
  — 
39-0550  2:1 
Speedometer 1973-94
39-0436    — 
2240:60  Speedometer  1981-94 Softail
39-0437** 39-0556** 2:1 
Speedometer  1995-99
39-0438  39-0576*  1978-up Tachometer  Custom
33-2043    — 
 
Light Socket
39-0550, 39-0556 have indicator lights, when installed on
Pre-90 models tap into orange wire exiting turn signal flasher 1991-up models signal indicator light can not be used.
**Note: Includes 2:1 ratio left side speedo drive unit.
Digital Speedo/Tachometer has the following functions:
• Bar Graph Tach
• High Beam
• Neutral
• Oil Pressure
• Turn Signals
• Digital Odometer
• Trip Meter
• MPH Only
• Unit measures 
110mm (L) x 57mm (H) x 38mm (W).
VT No.   Item
39-0599  
Gauge (B) Requires an installation bracket
39-0685
  Gauge (A) No bracket necessary for installation
31-2145
 Bracket
 39-0599 Installed with 31-2145
Front Views of 39-0599 and 39-0685
31-0984
 
39-0685
A
B
Digital Speedometer 
and Tachometer
39-0440
39-0579
39-0580
39-0439
48mm 60mm
White Black
Face Face
3-LED  4-LED  Ratio Item 
Year
39-0439  39-0578  2:1 
Speedometer 1973-94
39-0440  39-0579  2240:60  Speedometer  1981-94 Softail
39-0441
39-0550
39-0550
39-0438
39-0576
31-2145
39-0437
39-0436
39-0578
39-0599