Wiring instruction without plug and play harness (tapping into wires)

 11-14 WRX/STI

LIGHT SIDE -> VEHICLE SIDE

  1. RED -> RED/WHITE STRIPE
  2. BLUE ->  BLACK/WHITE STRIPE
  3. BLACK -> BLACK WIRE OR CHASSIS GROUND

2015+ WRX/STI

LIGHT SIDE -> VEHICLE SIDE

  1. RED -> BROWN
  2. BLUE -> BROWN/WHITE (MAY BE BLACK/WHITE ON SOME VEHICLES)
  3. BLACK -> BLACK WIRE OR CHASSIS GROUND

 Wiring with plug and play harness 

LIGHT SIDE -> PLUG AND PLAY HARNESS SIDE

  1. BLACK -> BLACK
  2. RED -> RED
  3. BLUE -> GREEN

Once harness is attached to the f1 light, simply plug it into the factory taillight wiring.