Any one ever used the Dakota Digital HLY-2004 on their roadking? They said its 100% compatible with the SERK3.
"255 MPH speedometer is already calibrated!
Odometer with two resettable trip odometers.
Resettable Miles to Service with warning (user settable countdown) and Hour meter.
Clock (12 hour format)
Quick response bar graph tachometer with adjustable shift point warning.
Gear Position Indicator compatible with 3- 6 speed transmissions.
Various indicators can also be displayed such as Turn Signal, High Beam, Neutral, Low Oil Pressure, Low Voltage and Security Indicators.
Voltage readout.
Cruise on and Cruise engaged indication
Automatic turn signal canceling compatible.
"Wait to start" / "Check Engine" light.
Several performance calculations include: 0- 60 time, high speed & high RPM recall, 1/4 mile time and speed.
Chrome front bezel with non-glare scratch resistant lens.
Machined aluminum housing"