Being extremely wondered looking at market prices on stuff such like OPTIONAL STROBE / NAV / LANDING LIGHTS* (* Optional equipment available at additional cost.) I have assembled light controller in my home lab myself. It has been created on PLC board "made in Italy". There are also installed mosfets IRF520 what supports up to 10 Amps continuously and 38 Amps in pick. Each mosfet works in one of three light circuits. Anyway I limit power of each light or total power of lights in a circuit as much as 60 Watts. The controller works on 12VDC. 5.30(L) x 2.95(W) x 1.92(H)inch. Youtube video can say much more. Now I would like to sell my controller to somebody for installing on a plane just because I have not started my own one. Some reasonable dollars would be OK. Also I give 45 days return with full refund and some rebate up to 40% if buyer provides comments and video how it works for him or her.

https://www.youtube.com/watch?v=ZtC_y3rpuwc