2012 workstar lighting issue

Well here I am with another international with more electronic issues. How anyone can own a IH nowadays and keep out of bankruptcy is beyond me. The unit is a 2012 Workstar tandem plow truck. Today at some point the fog lights, front post spot light and the rear wing spot light stopped working and the lights on the 4 switches that activate the lights will blink continuously. I am assuming the switch lights blink to notify operator of a fault in the circuit. I did retrieve some codes from the body controller but not very familiar with them and it does not help me much codes are as follows spn 520469, 520471, 520473, 520475, 520477 and all the spn codes are fmi 19. I will try to do a body controller reset by disconnecting batteries as HeavyD suggested for another problem I had on another unit. Find it very unlikely I have a electrical fault in each switched circuit. I have checked breakers and fuses they are good. Just looking for a explanation how the body controller controls the switches and diagnostic tips. Appreciate any tips and advise.