I have no spark on my johnson 100 hp 1972<br />I used an ohm meter and volt meter to check the circuits. I checked the clipper with an ohm meter according to the manual. All of the tests on it showed open circuits, which means the clipper is bad. On the pulse pack I disconnected the blue wire and hooked in a small 12v bulb. The red and purple wires are both hot. While cranking the engine the bulb did not glow. So the pulse pack is bad. I found where I can buy a new pulse pack but I can not locate a clipper. Can anybody help me?