[C38] Alternator connection. Does it go to the battery switch?

[Tom T.]

John is right about the isolator not fully charging.  The diodes in the isolator lose about 1 volt.  Those big heat fins are there for a reason.

There are three wires going to the alternator, the Output, Tachometer and Field.  The Output is large but the other two smaller wires are about the same size.  If I remember right, I think the two smaller wires have different terminal ends so they can't be confused.

Tom T.



----- Original Message ----- 
From: John Erlandson 
To: Catalina 38 Listserve
Sent: 4/12/2006 3:30:04 PM 
Subject: Re: [C38] Alternator connection. Does it go to the battery switch?


A battery isolator will insure that your batteries will never become fully charged and may shorten their useful life. Less capacity and less life, bad combo. A battery COMBINER will isolate banks with out any voltage loss.
John-
----- Original Message ----- 
From: Duff, Russ (R.W.) 
To: C38-List (Listserve at catalina38.org) 
Sent: Wednesday, April 12, 2006 10:17 AM
Subject: [C38] Alternator connection. Does it go to the battery switch?


I am going to install a battery isolator (I know, it's not the best way to go, but it's better than nothing) and I wanted to make sure I know where the alternator wire is.  I have a 1981 model with no real upgrades that has the original alternator and ammeter (I know BAD BAD BAD; use a voltmeter!  It's on my list).  I just wanted to verify that the alternator wire is probably connected to a separate post on the back of the battery switch (I will ohm things to verify but wanted to get the correct starting point). Is this correct?
I will then move this off of the switch and connect it directly to the isolator in the battery compartment (no switch).   From what I have seen, this is the correct solution.  Again, all comments are appreciated.  Thanks again.
Sincerely, 
Russ Duff 
Catalina 38, Hull #112
"AVANTURA"
Lake Erie
Grosse Ile, Michigan
RDUFF AT VISTEON DOT COM 








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