The wiring diagram and color code for the aux lamp board is in the manual. The diagram is on page 47 and the color code is on page 50. The first number is solid color the second is the tracer (13= red wire with yellow tracer), any number ending with 0 is a solid color with no tracer. If you don't have a manual, you can get it on this link - http://www.ipdb.org/search.pl