Half working lights on A/C and rear wiper? new head unit?

[corey407woc]

hey guys just installed a new sony head unit and i dont know if its from the installation but the lights on my A/c are half working. the left side with max a/c and rear fan off are off and the rest are on. dont know if i need to replace bulb in back or its a fuse. also the rear wiper buttons are not on but the foglight button is on?

dont know if it has something to do with wiring of new head unit from factory unit.

1999 ford explorer limited

 

[Bustedback]

If it was a fuse none of the lights would work, replace the bulbs. Double check your connections for the rear wiper switch.