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Main%Power%Wires%
Wiring the TRX lightbar into the vehicles electrical system does not require the use of relays. The power
and ground leads are connected directly to the 12Vdc to 24Vdc supply voltage and are always hot.
• Red to +Vdc
• Black to -Vdc
Control%Cable%
Activating the Lightbar is done by applying +Vdc to one or more of the lightbar control wires. The control
wires consume only a few milliamps of current and can be used with virtually any on/off switch. There are
five control wires in the Control Cable plus one +Vdc supply feed.
The control wires are color coded and control the functions shown below. Keep in mind that not all
lightbars will be configured in such a way that all control wires are used.
• Orange - Group 1 lamps
• Blue - Second Color lamps
• Brown/White - S.O.S. or warning pattern
• Brown wire - Running lamp
• Green wire - Dimming of all lamps
• Red/White - +Vdc
Orange'Wire'– On single color single beam pattern bars the orange wire will turn on the entire bar. If the
lamps in the lightbar are two beam patterns, half spot and half flood for example, the orange wire will
turn on just the spot lamps.
Blue'Wire'– If all the lamps in the lightbar have the same beam pattern, the blue wire will have no effect
on the lightbar and can be ignored. If the lamps in the lightbar are two different beam patterns, some
spot and some flood for example, the blue wire will turn on just the flood lamps. If you have a multi-beam
pattern lightbar and just want on/off functionality simply wire both the orange and blue wires to a single
switch.
If the lightbar is configured as a COLOR/white combination bar, the orange wire will activate the white
lights and the blue wire will activate the COLOR lights. In case both the orange and blue wires are activated
at the same time the COLOR lights will activate and the white lights will shut off. The COLOR lights can be
amber, red, blue or green.
Brown'Wire'- If the lightbar is configured as a COLOR/white combination bar, and the COLOR lights are
activated, the Brown wire will force one lamp to remain white to serve as the required front facing white
light.