I have a 91 Civic DX Hatch. All lights and directionals work except the corner light directionals. All fuses are good and the front bumper and rear flasher/directionals work. I have been unsuccessful finding a correct wiring diagram. Any help would be appreciated.

 

There's a recent thread that I replied to about this. The corner blinkers are controlled by the ICU. It's common for the ICU to have issues from time and heat.