I have a KMP 336 that I will be putting lights on. I'm going to use 10mm LED's for the landing lights and 5mm LED's for the nav, stobe and beacon. The lighting positions vary from model to model. The beacon and tail nav light are on the top and bottom of the right vertical stab. The landing lights are either in the L/H wing just outboard of the strut (early model) or in the cowling (late model).