[PDF] FLASHBACK ALTERNATING NOTE: DO NOT INSTALL THE FUSE restore vehicle wiring and contact SoundOff Signal Technical Support Department for further instructions. 4. Periodically have the operator of the vehicle repeat the above test to ensure proper operation of the vehicle safety systems. PA CKAGE TRAY LIGHTS 15 AM P FUSE SINGLE POLE/SINGLE THROW (S.P.S.T.) RELAY FLASHBACK 1N400x DIODE RED/BLACK Soundoff Flashback Wiring Diagram – onlineromania wwwneromania›wiring diagramSoundoff Flashback Wiring Diagram sound f signal ficial site sound f signal is a michigan based manufacturer of led lighting and electronic warning products Flasher Lookup || SoundOff Signal Flashers – Reference Chart NOTE: Headlight Flashers cannot be used on HID High Beams or Projection Systems. Choose from the dropdowns below to determine which product is recommended for your needs. Note: Due to ever-changing vehicle wiring conditions, verify with your local dealer.