OOPS,
my agolopies.
I was basing my comments on my 1965 1500 which IS positive earth.
Yes, the BATT terminal SHOULD be protected via fuseable link or maxi
fuse.
I'm adding one to the output of my alternator in an effort to protect
my car(electrics/operator) from inadvertant reverse battery
connection.
It has happened before, someone has etched a message on the firewall
"POSITIVE EARTH".
By the way, does anyone know why the earth polarity was changed??
No prize offered, just curious!
I spent 35.5 years working in the Telecommunications industry and
EVERTHING D.C. was positive earth.
Regards,
Graeme Suckling
1965 SP310 - under construction DSOA Member # 112
1971 P510 4 door - daily driver, original owner, highly modified.
1972 PL510 2 door - in storage.
1973 HS30/240Z - re-building to 2003 specs.
www.imagestation.com/mypictures/index.html
Adelaide, South Australia.
-----Original Message-----
From: Patrick J. Horne [mailto:horne@cs.utexas.edu]
Sent: Tuesday, 29 April 2003 9:49 PM
To: Graeme Suckling
Cc: PLETCH5@aol.com; Datsun Roadsters List (E-mail)
Subject: RE: alt and alt question-non datsun kinda
Gramme,
I think you had a few errors in this, probably from being on the
opposite
side of the world!
I made comments in the text below.
Peace,
Pat
- Support Habitat for Humanity, A "hand up", not a "hand out" -
Pat Horne, Network Manager, Shop Supervisor/Future planner, CS Dept,
University of Texas, 1 University Station C0500,Austin, Tx. 78712-1188
USA
voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu
On Tue, 29 Apr 2003, Graeme Suckling wrote:
> Ken,
> IG - is usually a signal (Battery negative)to the alternator to
excite
^^^^^^^ ^^^^^^^^
Battery Positive
> the rotor. Comes from the IGnition switch and should be a fused
> Negative feed.
^^^^^^^^
Positive
> L - is usually the ALT Lamp or CHG Lamp indicator on the
dash board.
> If not required, this terminal can probably be left disconnected.
> Some alts. rely on the earth behind the ALT/CHG lamp for a signal
> though.
> If that is your case, just wire in a 12V lamp (in the engine bay
> somewhere) and earth the other side of it.
> The Starter cable (size = 2G) normally runs straight from the
Battery
> Negative terminal to the starter terminal, unfused.
Positive
> Since the starter can draw up to 400A when cranking, there is
no point
> trying to protect the cable with a fuse/fuseable link.
> Just make sure the cable is HUGE to handle that sort of current
draw.
Gramme, I think you got off track here. The wire is not the STARTER
wire,
but the output lead from the ALTERNATOR.
This wire needs to be big enough to handle the full output of the
alternator and should have a fusible link in it. This wire can run
either
directly to the Positive battery terminal, or the stud on the starter
that
the positive battery cable connects to.
I would connect it to the battery. Nissan, on its later cars, has a
setup
where the positive battery terminal has a red cover over it and
supports 2
fusible links plugging into it. I found replacement battery cable
ends,
and the fusible link connector at my local Wal-mart, local parts
houses
couldn't provide it.
Peace,
Pat
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