Since you're trying to product-ize and might want to expand the market a bit... aviation might be a nice market. There's a whole culture of people who build light general aviation aircraft under the "experimental" class of aircraft.
Most kits come with wiring suggestions for standard things like fuel pumps, lights, etc but once you get into avionics the options are essentially limitless. A quick Google search has a few reddit threads of builders talking tools and it ranges from AutoCad ($$$) to some type of drawing software like MS Visio.
Most kits come with wiring suggestions for standard things like fuel pumps, lights, etc but once you get into avionics the options are essentially limitless. A quick Google search has a few reddit threads of builders talking tools and it ranges from AutoCad ($$$) to some type of drawing software like MS Visio.
Cool product!