Try you light bulb test to the "B" terminal (BATT) on the alternator, this wire does not turn off with the ign switch. BTY: Best tool on a boat for electric work is a clamp on Amp meter that does DC Amps. Lee Haefele ----- Original Message ----- From: "Letsgosailing" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, May 06, 2008 8:59 PM Subject: Re: [Liveaboard] alternator field connection
> Thanks Lee, > That was the answer that I was looking for. > I was looking for a place today to test my alternator but none has the old > hook up. > The are all computerized and looking for part numbers and car models. > Thanks, I suspected that the one-way diode is burned but the charging 14.5 > V > confused me. > It is a Hitachi alternator with internal regulator, it has also an "E" > terminal which I think is ground for protection. I haven't traced the wire > yet. > > Yanni Marinated > S/V Princess Thalia > Hamilton-Fifty Point @H3 > www.yannismarine.ca > ----- Original Message ----- > From: "Lee Haefele" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Tuesday, May 06, 2008 8:17 PM > Subject: Re: [Liveaboard] alternator field connection > > >> The purpose of that connection is to turn the alt field off when >> switching >> batteries. If the alternator is disconnected from the batteries while >> on, >> its voltage will rise to a point that destroys the internal diodes. >> Turning >> off the field turns off the alternator. I assume that this is 2 >> terminals, >> if so, one goes to the ignition switch, the other to the alternator. >> When >> the ignition switch is off, this would have no power. >> Trying the battery at the solenoid might still leave quite a lot >> connected, >> usually at least the engine gauges, controls, electric fuel pump get >> their >> power from there, via the ign switch, or via a relay triggered by the >> switch. >> Lee Haefele >> ----- Original Message ----- >> From: "Letsgosailing" <[EMAIL PROTECTED]> >> To: <[email protected]> >> Sent: Tuesday, May 06, 2008 7:40 PM >> Subject: [Liveaboard] alternator field connection >> >> >>> Hey all >>> Could someone more knowledgeable clarify the "field connection on the >>> alternator and the battery switch andwhat exactly it does effect. >>> I believe I am loosing current and one of the batteries drain back. It's >>> fairly new and I can't understand why the voltage drops. I did the old >>> test >>> interrupting the positive terminal with a light hooked up and it lights >>> it >>> comes on, that means there is a leak. All the circuits are ok. I tried >>> the >>> battery directly hooked up on the starter solenoid. >>> Any Ideas? >>> Yanni Marinated >>> S/V Princess Thalia >>> Hamilton-Fifty Point @H3 >>> www.yannismarine.ca >>> >>> _______________________________________________ >>> Liveaboard mailing list >>> [email protected] >>> To adjust your membership settings over the web >>> http://www.liveaboardnow.org/mailman/listinfo/liveaboard >>> To subscribe send an email to [EMAIL PROTECTED] >>> >>> To unsubscribe send an email to [EMAIL PROTECTED] >>> The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ >>> >>> To search the archives >>> http://www.mail-archive.com/[email protected] >>> >>> The Mailman Users Guide can be found here >>> http://www.gnu.org/software/mailman/mailman-member/index.html >>> >>> >>> -- >>> No virus found in this incoming message. >>> Checked by AVG. >>> Version: 7.5.524 / Virus Database: 269.23.8/1415 - Release Date: >>> 5/5/2008 >>> 6:01 AM >>> >>> >> >> _______________________________________________ >> Liveaboard mailing list >> [email protected] >> To adjust your membership settings over the web >> http://www.liveaboardnow.org/mailman/listinfo/liveaboard >> To subscribe send an email to [EMAIL PROTECTED] >> >> To unsubscribe send an email to [EMAIL PROTECTED] >> The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ >> >> To search the archives >> http://www.mail-archive.com/[email protected] >> >> The Mailman Users Guide can be found here >> http://www.gnu.org/software/mailman/mailman-member/index.html >> >> >> >> -- >> No virus found in this incoming message. >> Checked by AVG. >> Version: 7.5.524 / Virus Database: 269.23.9/1418 - Release Date: >> 06/05/2008 5:17 PM >> >> > > _______________________________________________ > Liveaboard mailing list > [email protected] > To adjust your membership settings over the web > http://www.liveaboardnow.org/mailman/listinfo/liveaboard > To subscribe send an email to [EMAIL PROTECTED] > > To unsubscribe send an email to [EMAIL PROTECTED] > The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ > > To search the archives > http://www.mail-archive.com/[email protected] > > The Mailman Users Guide can be found here > http://www.gnu.org/software/mailman/mailman-member/index.html > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.524 / Virus Database: 269.23.8/1415 - Release Date: 5/5/2008 > 6:01 AM > > _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
