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  #1   IP: 24.152.131.220
Old 08-19-2011, 10:48 PM
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ndutton ndutton is online now
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Alternator connection diagrams

Here are two diagrams I saved somewhere along the way, connections for our stock Motorola alternator and a 51 amp Mando

Motorola Alternator.jpg 51A Mando connections.jpg

for the Mando here's where they connect:

#14 light blue - ignition
#14 pink - alarm buzzer +
#14 gray - ?
#14 brown - tachometer
#10 red - output to either ammeter or starter post depending on your system
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1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others

Last edited by ndutton; 08-19-2011 at 10:51 PM. Reason: Mando legend
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Old 08-19-2011, 11:08 PM
hanleyclifford hanleyclifford is offline
 
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Neil - That Mando schematic is about as clear as mud. What is the "gray" wire? Is the brown wire actually the stator, the AC tap? If so it is violating stardard color coding (s/b white). Blue is usually for the field. Brown is usually for sensing. This diagram needs to be clarified. Please help us out.
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  #3   IP: 24.152.131.220
Old 08-19-2011, 11:14 PM
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I took it off another drawing (can't remember where now) and hated the color coding myself. I followed the wires on the schematic and typed where they connected. The gray didn't connect anywhere on the drawing.

I'll see if I can dig up the entire drawing. I think it might have been from a Catalina 34. I'll go lookin'
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Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Old 08-19-2011, 11:25 PM
hanleyclifford hanleyclifford is offline
 
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On another drawing I have the "L2" terminal is for an idiot light. This comes from the tech tips section at http://www.arcomarine.com

Last edited by hanleyclifford; 08-19-2011 at 11:38 PM.
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Old 08-19-2011, 11:49 PM
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Okay, found it. It's a Catalina 36 drawing.
Sorry for the file size but hopefully you can zoom in at this resolution.
Attached Files
File Type: pdf C-36 Schematic with Mando Alternator.pdf (868.9 KB, 92 views)
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Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Old 08-20-2011, 12:18 AM
hanleyclifford hanleyclifford is offline
 
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Thanks Neil. I see where you got it. There sure is a lot of confusion around about color coding of wires and also identification of terminals on alternators. If the yacht standard gnomes wanted something to work on, this would keep them busy.
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