Have just replaced 16 inch apes with drag bars. since then sparks coming from switch housing when fitted. So worked out wiring to the ignition and engine stop switches. Now one black wire out where it plugs into below fuel tank. When i placed it where i thought it belonged id push the ignition button only to hear the horn blow. When i pushed the engine kill switch no horn sound when ignition switch pushed so switches must be wired properly just need to know where the wires join beneath tank. Any help appreciated.