Dakota Digital HLY-3021 Manual

Performance tachometer

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(weather and vibration resistant for exposed environments)

*To avoid damage to motorcycle, please see Tachometer and Status and Warning Indicators sections for details on locating

Tachometer and indicator wires for most motorcycle applications

**The Check Engine indicator will not function using these gauges on 2004+ HD models due to the signal being fed through the 'data

bus', however the HD diagnostic tool can still check and clear codes through the diagnostic connector. 2004+HD Indicator wires match

the above chart, but please read Tachometer section for proper wiring.

GAUGE SETUP AND CALIBRATION

The setup menus are entered by holding the switch in while turning the key on. The menus are as follows:

Main Menu

Sub Menu

TACH

ENGINE

WARN

UPDATE

SIGNAL

INFO

MODEL

VER

PPM

GEAR

OFF

PROGRM

DONE

HLY-3021 rev C PERFORMANCE TACHOMETER

Description

set engine cylinder setting

set rpm shift warning point

set rpm update rate for digital readout

select normal or low voltage tach signal

NORMAL

LO VLT

Gauge model number

Gauge revision code

speed cal setting

transmission gear display selection

restart system with new settings

MAN#650087B

Page 1 HLY-3021 rev C PERFORMANCE TACHOMETER (weather and vibration resistant for exposed environments) *To avoid damage to motorcycle, please see Tachometer and Status and Warning Indicators sections for details on locating Tachometer and indicator wires for most motorcycle applications **The Check Engine indicator will not function using these gauges on 2004+ HD models due to the signal being fed through the ‘data bus’, however the HD diagnostic tool can still check and clear codes through the diagnostic connector.
Page 2 12 volts and the other coil wire will connect to the white/purple wire from the gauge. The relay contacts will be used to switch power to the light. Any 12volt automotive relay can be used, such as Dakota Digital’s RLY-1 30A relay.
Page 3 It will work with 3, 4, 5, or 6 speed transmissions. The speed signal must be fed from an HLY-3011 speedometer output. Connect the white wire from the HLY-3011 to the gray wire on the HLY-3021.
Page 4 Any action for breach of any warranty hereunder, including any implied warranty of merchantability, must be brought within a period of 24 months from date of original purchase. No person or representative is authorized to assume, for Dakota Digital, any liability other than expressed herein in connection with the sale of this product.