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Old 01-06-2014, 16:50   #1
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Wiring alternator terminals

Hi,

on our trip around the atlantic from Norway we are now in Boston and up till now we haven't had a working alternator (thats how energy efficient and good our solar panels are ). Now we are heading over to the Azores and we bought one here i the US.

It should be noted that I installed 90% of the electrical components, wires and so on in my boat so i'm fairly skilled in installing electrical stuff, but not alternators.

Question 1: Since the last one wasn't wired up i'm clueless about which terminal goes to what kind of cable.

The terminals clockwise from the one with yellow wire:
1: Unmarked
2: 61
3: W
4: B-

Question 2:
Do you agree with me that the regulator on the alternator is N-type:
Here is all the information I got from the dealer:
Quote:
Do you agree with me that the regulator on the alternator is N-type:
Here is all the information I got from the dealer about the regulator:

OEM(s): Paris Rhone, Valeo
Voltage: 12
Set Point: 14.3
Polarity: Negative
Includes Brush Holder?: Yes
Activation: Ignition
Adjustable?: No
Circuit Type: A-Circuit
Includes Rectifier?: No
Includes Tolerance Ring?: No
Application: Paris Rhone Alternators
When it says "polariy: Negative" does this mean N-type?

Question 3:
I only now discovered that it says that it does not include rectifier! Does this mean it produces AC? Which would suck.

Question 4:
How important is it to buy a smart regulator for the alternator? I know it would help quite a bit on the efficiency, but we have only a four days before leave for the Atlantic, so it would be difficult to get one i suspect (here in Boston).

Thanks guys for the help!

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Old 01-06-2014, 16:56   #2
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Re: Wiring alternator terminals

Try google...Paris Rhone alternator wiring...
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Old 01-06-2014, 17:13   #3
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Re: Wiring alternator terminals

Tomorrow is Monday, businesses are open. Take your alternator to an alternator shop. They will be able to test it for you, confirm the connections and maybe even suggest a regulator. You can buy a Balmar external "smart" regulator at any good marine chandlerey or have the alternator shop mount a simple automotive regulator for you, which is probably all you need given your system and success with solar.

By alternator shop, I mean a simple automotive shop, not a marine alternator shop - they do not exist.

Good luck. It should be simple.
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Old 01-06-2014, 17:15   #4
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Re: Wiring alternator terminals

Quote:
Originally Posted by DeepFrz View Post
Try google...Paris Rhone alternator wiring...
I did, but haven't found anything, yet...

Regarding the rectifier I hardly can't believe that is without it. Also if I'm not mistaken this is the diode rectifier bridge (see picture).

Also, the picture has a plus symbol on the left side (the part which has the yellow wire terminal and the 61. The other side (the part which has the B- and W terminals) has a minus symbol. If this helps.



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Old 01-06-2014, 17:37   #5
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Re: Wiring alternator terminals

Yes, that is a typical Valeo alternator (do you have a Volvo engine?). That black boxy thing is the internal regulator. That is the diode bridge for rectification you see in the latter picture. The positive lead goes on the post with the yellow sense wire connected to it. The negative lead goes on the large post opposite that. The tach wire goes to the W post and the other wires from the ignition panel goes on the other (typically a blue/red and a brown wire).

You can add an external regulator if you disconnect the internal one and add a lead to the brush. You cannot add a Balmar regulator because they are P-type only. Sterling makes a regulator that can be set to P or N-type.

But it sounds like you will be fine using the internal regulator.

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Old 01-06-2014, 17:42   #6
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Re: Wiring alternator terminals

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Originally Posted by colemj View Post
Yes, that is a typical Valeo alternator (do you have a Volvo engine?). That black boxy thing is the internal regulator. That is the diode bridge for rectification you see in the latter picture. The positive lead goes on the post with the yellow sense wire connected to it. The negative lead goes on the large post opposite that. The tach wire goes to the W post and the other wires from the ignition panel goes on the other (typically a blue/red and a brown wire).

You can add an external regulator if you disconnect the internal one and add a lead to the brush. You cannot add a Balmar regulator because they are P-type only. Sterling makes a regulator that can be set to P or N-type.

But it sounds like you will be fine using the internal regulator.

Mark
Thanks, that was what I figured out also (by writing down my thoughts and google it helped me). Great to have someone else agree with me (love confirmation bias).

I have a Bukh DV36.

Regarding the smart regulator I will look around tomorrow and see if i find one. Do you agree that this is a N-type regulator?
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Old 01-06-2014, 18:16   #7
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Re: Wiring alternator terminals

All the Valeo alternators I am familiar with have N-type regulation. Again, it doesn't sound like you need to go to the trouble of removing the regulator, soldering wires to the field brush and installing an external regulator capable of N-regulation. Your electrical needs and generation seem closely balanced now, and this internally regulated alternator will help on those more cloudy days.

This is a small frame alternator and an external regulator will drive it very hot. We have a Valeo modified with an external regulator and it will reach 250*F if driven hard.

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Old 04-06-2014, 12:38   #8
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Re: Wiring alternator terminals

So will there be one or two wires connected to the 61 terminal? Thats the terminal that will go to the ignition panel. I have three small wires to choose from.

1: goes to a lamp on ignition panel. Another cable goes from the lamp to another lamp and then to the ignition key.
2: goes to the ignition key (the spot as nr 1)
3: goes to a separate slot on the ignition key

Which one(s) will go to 61?
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Old 04-06-2014, 12:47   #9
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Re: Wiring alternator terminals

Try this

How to properly wire your Marine Alternator
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Old 04-06-2014, 12:51   #10
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Re: Wiring alternator terminals

Yeah, says indicator light. So lets try that

I think the worst thing that can happen is that it does not work... (?) That is, as long as i have connected neg and pos correct.
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Old 04-06-2014, 14:25   #11
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Re: Wiring alternator terminals

On our Volvo, that terminal has two wires on it - one from the key switch and the other from the indicator light.

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Old 04-06-2014, 19:48   #12
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Re: Wiring alternator terminals

Quote:
Originally Posted by Golden Orchid View Post
Yeah, says indicator light. So lets try that

I think the worst thing that can happen is that it does not work... (?) That is, as long as i have connected neg and pos correct.
That didn't work. Theres volt on the wire. I traced the problem (i think) to a lamp on the instrument panel. There is a 7 V voltage drop between the to terminals on this lamp. The lamp is marked AMP and is on when the key is on.

There is a further voltage drop on the next lamp which the wire to the 61 terminal is connected.
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