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

15+ WRX/STI WIRING
LIGHT SIDE -> VEHICLE SIDE

SOLID BRAKE LIGHTS ONLY (NO FLASH FUNCTION , NO RUNNING LIGHT)

GREEN -> BROWN
RED -> LEAVE DISCONNECTED
BLACK -> BLACK

FLASHING BRAKE LIGHT ONLY ( FLASH WHEN BRAKE, NO RUNNING LIGHTS)

GREEN -> LEAVE DISCONNECTED
RED -> BROWN
BLACK -> BLACK

BRAKE LIGHTS AND RUNNING LIGHTS (FULL BRIGHTNESS RUNNING LIGHT, FLASH ON BRAKE APPLICATION)

GREEN -> BROWN/WHITE STRIPE (MAY BE BLACK/WHITE STRIPE ON SOME VEHICLES)
RED -> BROWN
BLACK -> BLACK

08-14 WRX/STI WIRING
LIGHT SIDE -> VEHICLE SIDE

SOLID BRAKE LIGHTS ONLY (NO FLASH, NO RUNNING LIGHT)

GREEN -> RED/WHITE STRIPE
RED -> LEAVE DISCONNECTED
BLACK -> BLACK

FLASHING BRAKE LIGHT ONLY ( FLASH WHEN BRAKE, NO RUNNING LIGHTS)

GREEN -> LEAVE DISCONNECTED
RED -> RED/WHITE STRIPE
BLACK -> BLACK

BRAKE LIGHTS AND RUNNING LIGHTS (FULL BRIGHTNESS RUNNING LIGHT, FLASH ON BRAKE APPLICATION)

GREEN -> BLACK/WHITE STRIPE
RED -> RED/WHITE STRIPE
BLACK -> BLACK

WIRING WITH PLUG AND PLAY HARNESS

Match the wiring colors and attach

GREEN -> GREEN
RED -> RED
BLACK -> BLACK 

Once the harness is attached to the F1 light , simply plug the harness into the factory tail lamp wiring and you're done!