Have a modifyed laptop hooked up to a kenwoodwood dnx7100 coing from s-video to composite. Very hard to read on a screen that small. was thing about a drop down with a vga input for the back of my explorer. there are far and few inbetween. on 19 inch on ebay from china think 19 is too big any suggestions. laptop is modded to run a vehicle battery with a remote power switch