[C320-list] Alternator Wiring Question

[Bob Borelli]

Mark,
I have a fuse in the black ground line I believe between the engine harness and the alternator.
It is fat, covered by black sheath and located almost directly under the exhaust elbow and the aft / port corner of my M30.
Right behind the blue fly wheel cover plate.
It is a fuse.
However I am not at the boat and don't have the information printed on the fuse.
I will get down there this week & read get info off the fuse.
Hopefully you will have resolved this issue sooner.

Bob Borelli
1995 no. 209
________________________________
From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of Pat Tormey <ptormey at 4square.net>
Sent: Monday, June 29, 2020 8:00 AM
To: c320-list at catalina320.com <c320-list at catalina320.com>
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