During normal operation my 1968 55hp Evinrude was in neutral at an idle, engine made several<br />increases in the rpm's then stopped. Engine cranks over just fine and appears to be getting<br />fuel but no spark, I replaced the coil and checked points (like new, cleaned with alcohol and<br />reset gap to .010). With a voltmeter I check amplifier assembly (1500 scale) blue wire to coil<br />(unplugged) during cranking only read battery power (12.6). All connectors and ground look<br />good yet I see no spark coming from the plugs. With ignition key on I can unplug single black<br />wire going to points and amplifier will tick, does sound normal? If you hand turn flywheel you<br />can see points are opening and closing with an ohm meter connected to this single black wire.<br /><br />Is there any other home test method to verify amplifier, as I'm not willing to depart with $300<br />on a guess. 