nobody cares about your idea. They care about your execution.
Most business guys get a bad rep because they think they have a genius idea and expect programmers to make it happen. They don't appreciate or even recognize the amount of difficulties and problems that have to be solved to come anywhere close to a usable product.
Focus on what you can bring to the table. My current focus is mainly about identifying first the market and marketing strategy (and testing it) then about helping the developer come up with a minimum viable product (as in what functions are truly necessary to our potential users that can allow us to better get an idea of our market).
If you can convince a technical co-founder that you can EXECUTE on an idea (with their help) then you'll start gaining some traction. Until then you're just another guy with an idea whose asking someone else to do all the work (this might not be true but by default it's what others will assume unless you explicitly explain what you bring to the table).