Federal Signal 656105 Tail Light Flasher Installation Instructions

The Federal Signal 656105 Tail Light Flasher is a compact electronic flasher designed to alternate the brake lights and back-up lights on a 12VDC negative ground vehicle. It will flash at a constant rate of 60 or 144 flashes per minute, depending on which pattern is selected during installation, providing an effective warning signal to reduce rear-end collisions. The flasher also overrides the brake light section when you apply the brake.

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Federal Signal 656105 Tail Light Flasher Installation Instructions | Manualzz

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Key features

  • Alternates brake and back-up lights
  • Constant flash rate of 60 or 144 flashes per minute
  • Overrides brake light section when brake is applied
  • Compact electronic design
  • 12VDC negative ground operation
  • Effective warning signal to reduce rear-end collisions
  • Easy installation

Frequently asked questions

The FTL flasher alternates the brake lights and back-up lights on a vehicle, creating a flashing warning signal to alert other drivers of your vehicle's intentions.

No, DO NOT connect the FTL flasher to the high-mounted stop lamp, as it violates Federal Motor Vehicle Safety Standard (FMVSS) No. 108, which requires this lamp to only illuminate when applying the brakes.

The FTL flasher can be set to flash at either 60 or 144 flashes per minute. The default setting is 60 flashes per minute. To switch to the 144 flash pattern, connect the brown and gray wires together prior to attaching them to the single pole, single throw switch.
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