Installation Manual
4 SpeedTech Lights, Inc © 2019
K-FORCE
®
MICRO 21
MINI LIGHT BAR
Grand Control Switch Box Operation (Sold Separately)
Power Button:
• Toggle to power the Light Bar On and O.
Flash Pattern Button:
• Toggle button to cycle to the next ash pattern with each press.
• Non-Volatile memory recalls the last ash pattern selected.
• Hold ash pattern toggle for 3 seconds to toggle Steady Burn mode.
• Hold ash pattern toggle for 5 seconds to toggle Random pattern mode.
TD Button*:
• 1st press: Steady Burn Alley.
• 2nd press: Flashing Alley.
• 3rd press: Flash Alley in the same sequence/ash as the active warning pattern.
AUX Button*:
• Toggle button to power AUX cables On and O.
Back Plate Mount:
• Included with Grand Control Switch Box purchase.
* Warning lights do not need to be activated for these Buttons to be functional.
Extension Cable (Sold Separately)
• If you have an extension cable with connectors, connect the corresponding ends to one another.
Use the connector at the end of the cable to plug into your control box.
• If you have an extension cable with one connector, you will need to cut the connector o of the main
cable harness coming out of the Light Bar. Save it as a spare part. You will solder, and heat shrink
each wire within the cable harness to each wire in the extension cable harness. DO NOT cross
connect wires. Use the connector at the end of the extension cable to plug into your control box.
• If you have an extension cable with no connectors, you will need to cut in the middle of the main
cable harness coming out of the Light Bar. You will solder, and heat shrink each wire within the
cable harness to each wire in the extension cable harness. DO NOT cross connect wires. Use
the connector at the end of the main cable harness to plug into your control box. DO NOT leave
connectors, cables, solder points exposed to heat, moisture, or debris.
Wiring Diagram
Wire Color Function
Red*
Positive
Black*
Negative
Yellow
Flash Pattern
* Indicates a main power cable.
Wire Color Function
White
Positive (When bypassing Grand Control Box)
Blue
Alley Steady
Green
Take Down Flashing
NOTE: All cables except Negative contact +12 VDC.
Specications
Voltage
12 VDC
Amps < 5.8
Optic TIR / Linear
LED Count TIR: 40 / Linear: 60
Cable Length 13’ Light Bar Cable, 1.8’ CLP Cable, 8’ AUX Cable
Flash Patterns 30
AUX Wiring Diagram
Wire Color Function
Red
AUX Positive
Blue
AUX Negative