Re: Stus-List Universal Diesel harness upgrade

[dwight veinot via CnC-List]

Chuck, thanks ever so much for the excellent article on the Universal
diesel engine harness upgrade.  Alianna has an M4-30 which has exactly
the engine panel shown in the photo and the wiring harness is also as
described.  I have noticed a low charging voltage so I removed the
alternator and had it shop tested only to find out it was working
properly.  Now I know more about the source of the problem and
rewiring that system will be first on my to do list next spring.  The
instructions in the article make it seem like I should be able to do
this myself.  I also noticed that when starting the motor my chart
plotter, if on, always turns off and then restarts...I am hoping that
fixing this dangerous wire harness issue will resolve that problem
too.
Dwight Veinot
C&C 35 MKII, Alianna
Head of St. Margaret's Bay, NS
d.ve...@bellaliant.net


On Tue, Nov 5, 2019 at 6:04 PM Chuck Saur via CnC-List
 wrote:
>
> Hello from already snowy Michigan.
> Seems the 1990 M-35 I have for power in my boat is, well, not really designed 
> well in the wiring department. I have read stuff describing it as "dangerous" 
> to "fatal" and worse.  There appear to be two related issues:  First, that 
> the harness is not capable of the loads to and from the alternator, ammeter 
> and starter, (plus glow plugs) and two, that the light blue 'trailer harness' 
> connectors fail and burn.  I've read several posts at different websites, and 
> a great fix explained here:
> https://marinehowto.com/universal-diesel-engine-wiring-harness-upgrade/
>
> I wonder who on our expert list has tackled this problem.  I am considering 
> fixing what I have, or purchasing a new gauge panel and all wiring. You can 
> do that from Catalina Direct and others.
> Any experience or opinions from fellow Universal owners?
>
>
>
> Chuck Saur
>
> Daydream C&C 37+
>
>
>
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each and 
> every one is greatly appreciated.  If you want to support the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray
>

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Re: Stus-List Universal Diesel harness upgrade

[Neil Gallagher via CnC-List]

Chuck,

My 35-1 with an  A4 is wired that way, though without the connectors.  
Appears to have been that way for 40+ years.  At least Universal is 
consistent. Not sure I see a particular problem with it (without the 
connectors), as long as the wire size to/from the ammeter is adequate 
for the amperage, which should be the maximum charging amps. Of course 
if the starter and glow plugs' current went through the ammeter that'd 
be different, but on a Universal M30-B that I put in my club's launch 
that was not the case.


I rewired the system to use an ACR this summer, which separated the 
house and battery loads, so while previously it showed both charging and 
discharging amps, now it only shows charging amps.


Neil Gallagher
Weatherly, 35-1
Glen Cove, NY



On 11/5/2019 5:03 PM, Chuck Saur via CnC-List wrote:

Hello from already snowy Michigan.
Seems the 1990 M-35 I have for power in my boat is, well, not really 
designed well in the wiring department. I have read stuff describing 
it as "dangerous" to "fatal" and worse.  There appear to be two 
related issues:  First, that the harness is not capable of the loads 
to and from the alternator, ammeter and starter, (plus glow plugs) and 
two, that the light blue 'trailer harness' connectors fail and burn.  
I've read several posts at different websites, and a great fix 
explained here:

https://marinehowto.com/universal-diesel-engine-wiring-harness-upgrade/
I wonder who on our expert list has tackled this problem.  I am 
considering fixing what I have, or purchasing a new gauge panel and 
all wiring. You can do that from Catalina Direct and others.

Any experience or opinions from fellow Universal owners?

*
*
*
*

*Chuck Saur*

*Daydream C&C 37+ *

*

*



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Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray



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Re: Stus-List Universal Diesel harness upgrade

[Dennis C. via CnC-List]

My read is that the shunt is in the ammeter itself.   Thus all the current
must travel to/from the alternator through the ammeter to the user(s).
Most ammeters these days use an external shunt and only small signal wires
to/from the ammeter.

The recommended fix looks fine.  He's a knowledgeable guy with lots of good
advice.

If you want an ammeter in the engine panel, swap it out for one with an
external shunt.

Also, do you want to measure the amps from the alternator or amps being
used by the boat?  Two different things.

Dennis C.
Touche' 35-1 #83
Mandeville, LA

On Tue, Nov 5, 2019 at 4:04 PM Chuck Saur via CnC-List <
cnc-list@cnc-list.com> wrote:

> Hello from already snowy Michigan.
> Seems the 1990 M-35 I have for power in my boat is, well, not really
> designed well in the wiring department. I have read stuff describing it as
> "dangerous" to "fatal" and worse.  There appear to be two related issues:
>  First, that the harness is not capable of the loads to and from the
> alternator, ammeter and starter, (plus glow plugs) and two, that the light
> blue 'trailer harness' connectors fail and burn.  I've read several posts
> at different websites, and a great fix explained here:
> https://marinehowto.com/universal-diesel-engine-wiring-harness-upgrade/
>
> I wonder who on our expert list has tackled this problem.  I am
> considering fixing what I have, or purchasing a new gauge panel and all
> wiring. You can do that from Catalina Direct and others.
> Any experience or opinions from fellow Universal owners?
>
>
>
> *Chuck Saur*
>
> *Daydream C&C 37+  *
>
>
>
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --   https://www.paypal.me/stumurray
>
>
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Universal Diesel harness upgrade

[David Knecht via CnC-List]

I cut the connectors and directly butt spliced the wires together since I had 
no plans to need to pull the harness apart.  If I ever had to replace the 
engine, those harnesses are the least of my problems. Dave

S/V Aries
1990 C&C 34+
New London, CT



> On Nov 5, 2019, at 5:03 PM, Chuck Saur via CnC-List  
> wrote:
> 
> Hello from already snowy Michigan. 
> Seems the 1990 M-35 I have for power in my boat is, well, not really designed 
> well in the wiring department. I have read stuff describing it as "dangerous" 
> to "fatal" and worse.  There appear to be two related issues:  First, that 
> the harness is not capable of the loads to and from the alternator, ammeter 
> and starter, (plus glow plugs) and two, that the light blue 'trailer harness' 
> connectors fail and burn.  I've read several posts at different websites, and 
> a great fix explained here: 
> https://marinehowto.com/universal-diesel-engine-wiring-harness-upgrade/ 
>  
>  
> I wonder who on our expert list has tackled this problem.  I am considering 
> fixing what I have, or purchasing a new gauge panel and all wiring. You can 
> do that from Catalina Direct and others.
> Any experience or opinions from fellow Universal owners?
> 
> 
> 
> Chuck Saur
> 
> Daydream C&C 37+  
> 
> 
> 
> 
> ___
> 
> Thanks everyone for supporting this list with your contributions.  Each and 
> every one is greatly appreciated.  If you want to support the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray
> 

___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Stus-List Universal Diesel harness upgrade

[Chuck Saur via CnC-List]

Hello from already snowy Michigan.
Seems the 1990 M-35 I have for power in my boat is, well, not really
designed well in the wiring department. I have read stuff describing it as
"dangerous" to "fatal" and worse.  There appear to be two related issues:
 First, that the harness is not capable of the loads to and from the
alternator, ammeter and starter, (plus glow plugs) and two, that the light
blue 'trailer harness' connectors fail and burn.  I've read several posts
at different websites, and a great fix explained here:
https://marinehowto.com/universal-diesel-engine-wiring-harness-upgrade/

I wonder who on our expert list has tackled this problem.  I am considering
fixing what I have, or purchasing a new gauge panel and all wiring. You can
do that from Catalina Direct and others.
Any experience or opinions from fellow Universal owners?



*Chuck Saur*

*Daydream C&C 37+  *
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray