Hi all,<br />while fighting 2 problems (starting my 1990/ 90HP OMC engine and my native language German), I got the Seloc Manual, traced the wiring diagram, found the unknown word rectifier (sounded like something for old men), checked the web and found this great forum. Maybe someone could help ?<br /><br />I got this old engine since 9 moths, was running OK. Got the boat out because of Charlie etc. Now<br />I want to get it in again. Just for fun, I changed the lower unit oil and the sparks, some fuel hoses and then tried to start the engine.<br /><br />Imagine:<br />I pump the fuel, turn the key to run, the warning horn sounds, I turn to start, the starter rotates and the engine starts roaring. I stop it after a few second. 
<br />I turn the key again to run, no horn, I turn to start, nothing. Pressing the Trim/Tilt switch at the engine results in the relays clickering. I have 12 V at the battery, at the starter selenoid, both staying whatever I do with the key. I disabled the cut switch a the gear lever, the dead man switch, checked all cabling, changed the battery. nothing.<br /><br />While I'm looking frustrated at engine, I suddenly hear the horn again (I left tje key in run position). The trim/tilt switch is working again. The starter works. Sometimes it's dead for an hour, sometimes for 10 min. Yesterday I got nothing the whole afternoon. <br /><br />This is beyond my understanding. <br /><br />Oh, maybe this helps:<br />2 or 3 times, while checking at places where I expected 12 Volt, my meter freaked out telling me someting about several 100 V (DC), but suddenly that was gone again.<br /><br />Any ideas where to go for searching would be appreciated.
<br />I turn the key again to run, no horn, I turn to start, nothing. Pressing the Trim/Tilt switch at the engine results in the relays clickering. I have 12 V at the battery, at the starter selenoid, both staying whatever I do with the key. I disabled the cut switch a the gear lever, the dead man switch, checked all cabling, changed the battery. nothing.<br /><br />While I'm looking frustrated at engine, I suddenly hear the horn again (I left tje key in run position). The trim/tilt switch is working again. The starter works. Sometimes it's dead for an hour, sometimes for 10 min. Yesterday I got nothing the whole afternoon. <br /><br />This is beyond my understanding. <br /><br />Oh, maybe this helps:<br />2 or 3 times, while checking at places where I expected 12 Volt, my meter freaked out telling me someting about several 100 V (DC), but suddenly that was gone again.<br /><br />Any ideas where to go for searching would be appreciated.