![background image](http://html1.mh-extra.com/html/federal-signal-corporation/fireray-utility-light/fireray-utility-light_installation-and-maintenance-instructions-manual_3882164011.webp)
11
Installallation and Maintenance Instructions
Federal Signal
www.fedsig.com
Making Electrical Connections
Making Electrical Connections
The FireRay utility light heads assembly operates on 12 Vdc.
Two, three or four 7.8” long lead wires are supplied for making
electrical connections to the FireRay utility light heads assembly.
Ensure that all wires are properly connected and insulated
appropriately.
EXPLOSION HAZARD: To avoid a battery explosion, always
disconnect the negative battery cable first and reconnect it last.
Avoid causing a spark when connecting near or to the battery.
The gases produced by a battery can cause a battery explosion
that could result in vehicle damage and serious injury.
To make electrical connections, using 20-gauge (minimum) wire,
connect the red (+) lead and/or white (+) lead to the positive
power source terminal and the black (–) lead to the negative
power source terminal.
For Brake-Tail-Turn Lamp
• Red: To +Vdc for Brake Signal or Turn Signal (Suggested Fuse
Rating at 1 A)
• White: To +Vcd for Tail Signal (Suggested Fuse Rating 1 A)
• Black: To -Chassis Ground
• Yellow: For Synchronization, Brake Signal Pattern
Connect yellow wires of all light heads together for
synchronization. All light heads should be set at the same
pattern.
For Brake Signal Pattern Change, momentarily apply +Vdc to the
yellow wire once for the next pattern, or quickly three times to
set to Flash Pattern #1
Table 2 Brake signal patterns
FP# Brake Signal Pattern
1
Blink to Steady
2
Steady