Federal Signal 3TLD-02 Instrucciones De Instalación página 8

3
LED Warning Lights
Installing the Surface Mount Model
To install the light:
1. Route the wiring harness through the rubber gasket and through the grommet in the mounting surface.
2. Install an installer-supplied switch with a current capacity of at least 10 amperes at a location that allows
the vehicle and all controls to be operated safely under all driving conditions (Figure 1).
NOTE: Polarity MUST be observed for proper operation. The blue wire connects to positive and the
brown wire connects to negative. If the connections are reversed, the light will not function. Use 18 AWG
wire for runs under 7 meters. For wire runs over 7 meters, select an appropriate gauge. Ensure that the
vehicle's supply voltage is within the voltage rating specifi ed on the led light.
3. Route a user-supplied 18 AWG (minimum) blue wire from one side of the switch to the light and connect
it to the blue wire of the light.
4. In the blue wire install an installer-supplied in-line fuse holder as close as practical to the battery. Install a
5-ampere fuse (minimum) in the fuse holder. Connect the fuse holder between a positive voltage source
and the blue wire of the other side of the switch.
5. Route a user-supplied 18 AWG (minimum) brown wire from a known good vehicle ground to the light and
connect it to the brown wire of the light.
6. Install the grommet in the wire-routing hole. To prevent water leakage, apply a silicone sealing compound
around the wires and grommet where they pass through the mounting surface.
7. Install the light on the mounting surface using three screws.
Figure 1 Surface mount model