leboutillier

As far as I can tell the b+ is going to 1 split charge diode and the other is going to the other as you can see they need a good clean The battery monitor only read a maximum of 13.4 v charging at 14.4 amp's after the engin was running for 10 minutes I am assuming that it went into trickle charge mode But even after 2 hours the batterys red that they was only 80% full after ther settling period

So I managed to get back to the boat to day and have the wiring diagram as it should be as it is using a ADVERC battery management system I can now see some problems The boat is a single beta marine with 2 alternators my querie now is Altnator 1 supply's the engin battery as far as I am aware and alternator 2 supplies the domestic batterys But what I don't understand is why the adverc bcm is connected to alternator 1 or does it not matter as both alternators first go to the SPLIT CHARGE DIODE: ( Multi-Battery Isolator) Also would this diagram still be the same with one engin and 2 alternators Sorry to keep asking I am just trying understand the system and clean up the 30 year old wiring Also the previous owner did not have separate red charg lights or a yellow warning light

One of the reasons that I thought it may be a relay I because I have a old vw with a split charge system installed and have had a problem in the past around 12 years ago As a hgv mechanic I like the fact that the ecu can control it now but it is more expensive way when things go wrong As I was call upon yesterday to carry out a fix and the loss of light at around 5:30 I was unable to dig to deep especially with 2 dogs trying to look aswell 😆 But again thanks for the information you have supplied as it has given me mor of a insite of what I have to look at It has been mentioned that the diode could be causing a back flow of current on the engin battery altnater and in tern was the caus of the lamp being on and now that they are both connected it is the reason that it is verry dim barley notable

I had not ignored the questions I was unable to answer due to no having the alternator with me during the time of them being asked my brother had taken it for diagnosis and repairs I am sorry for any confusion that it has caused

So the regulator had gone down it has now been repaired and installed back on to the engin the red light is still on but verry dim now I think you was right about the booster as you previously mentioned I am going to have a look for a relay when I'm next down as I suspect it might be either sticking or have carbon on the contact I didn't have a chance to take the regulator off as my brother had it repaired in Leicester We are going to keep the new on as a spare and I will carry out the modification to it when next up aswell Thanks for all the input

The red light is on when connected but will go out when disconnected I'm going to look in to it at the weekend for now as bothe are charging at around 13 to 14 volts I will jus use it as a engin running light un till I can get to the back of the control panel

Thanks Bengo The picture I originally put on is jus a generic one edited hear is the actual one the red bit is the connecter

Hi all my name is Scott I am after a bit of your knowledge if you could I have a alternator on my mother's boat that i have had to change due to only giving out 7 volts to the leisure/domestic batterys and it has a additional green wire on it but my replacement does not I have included a image if that helps I know B+ is battery positive and D+ goes to the warning lamp However on the other the alternator that goes to the starter battery it has the same wire in the same place Bothe of the original alternators was connected to gether at the green wire If I disconnected the green wire the tacho/Reves stop working and the red warning light will go out but if I conect it up the red warning light will come on and the tacho will work again Both Alternators are working and giving out 14.5 volts to there relative battery's I'm just trying to work out the purpose of the green wire and is there a way to sort out the warning lamp but still keep the tacho working. It is a lucas type a127 alternator