[C320-list] Alternator Wiring Question

[Jeff Smith]

Bob continues to educate me. It is called a “Brush semi-conductor fuse”. I can send you pictures but I can’t read the writing on the body. It looks like 240U, but that is a guess.

It has 80LET stamped on one side of the metal lug that is attached to one side of the fuse.

I hope this helps.

Jeff
‘94, #121


Sent from my iPhone

> On Jun 29, 2020, at 9:35 AM, Bob Borelli <cassattc22 at hotmail.com> wrote:
> 
> 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
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> Pat Tormey
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> On Sun, Jun 28, 2020 at 3:08 PM -0400, <mseyler at cox.net> wrote:
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> This question is mainly for those who have a C320 with a Perkins M30 engine,
> although I'll take help from anyone.
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> 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.
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> 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.
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> Thanks in advance for any help.
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> Mark Seyler
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> S/V Reality,
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> Catalina 320, #232
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> New Orleans, LA
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