[C320-list] Alternator Wiring Question

[Mark Seyler]

I was able to find the fuse.  It was an in-line fuse around the back side of the engine, as Bob pointed out.  It was a Bussman Semiconductor Fuse Model 80 LET.  Because I am upgrading to an 80amp alternator from the OEM 55amp, I upped the fuse to a 100amp fuse, which gives me about the same amount of leeway on the larger capacity alternator.  I found it at the link below:

https://www.allfuses.com/100let 

Thanks for the help.



Mark Seyler
S/V Reality, 
Catalina 320, #232
New Orleans, LA




-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of amshd2 at aol.com
Sent: Monday, June 29, 2020 10:54 AM
To: ptormey at 4square.net; c320-list at catalina320.com
Subject: Re: [C320-list] Alternator Wiring Question

Lucas built both internal and external grounded alternators that run on a M30.
If you wire the ground wrong it will not produce any output. Tony 


-----Original Message-----
From: Pat Tormey <ptormey at 4square.net>
To: c320-list at catalina320.com
Sent: Mon, Jun 29, 2020 8:00 am
Subject: Re: [C320-list] Alternator Wiring Question

I don't know that issue, but you can use a multimeter to confirm continuity. Just read both ends based on the color code


 




Pat Tormey







On Sun, Jun 28, 2020 at 3:08 PM -0400, <mseyler at cox.net> wrote:










This question is mainly for those who have a C320 with a Perkins M30 engine,
although I'll take help from anyone.

 

I am replacing my OEM Lucas A127 alternator with an 80-amp Lucas alternator
from Parts4Engines.com. The wiring connections are the same on both
alternators, but I am not getting any output from the replacement.  One
possible issue is the ground wire attached to the "B-" connection on the
alternator.  The wiring diagram in the Perkins Workshop Manual shows a fuse
in that line somewhere, but I can't find the fuse because the wire
disappears into a wiring harness bundle.  

 

Does anyone know whether the harness really does have a fuse, and if so
where it is located?  Bonus points if you can also tell me where I would
find a replacement if the fuse is blown.

 

Thanks in advance for any help.

 

Mark Seyler

S/V Reality, 

Catalina 320, #232

New Orleans, LA