proper wiring of stove igniter, I get no spark

Wayne asked about my igniter...it's the push down, hold down button variety, until it lights the gas. It sparks pretty loudly when it works and all my electrodes are very clean since I ddin't use my rv very much in the ten years I owned. it sorry to say. I will try again and attach that black wire to the stove to ground it and see what happens..wish me luck....Lloyd