I installed a GM alternator over the winter. The white wire on the two
connector plug is for the idiot light, which is also a source of excitement
for the alternator.
For my installation I used a #53 lamp in series with a switched (accessory)
power source to the white wire on the alternator. When I turn on the power
the lamp comes on. When the alternator begins to generate current the lamp
goes off. That occurs with a little application of gas after starting the
engine. The characteristics of the bulb will determine how fast the engine
has to turn before the alternator begins to work. I tried a few light bulbs
and the #53 bulb seemed to give me a reliable turn-on at reasonable RPM's.
Sorry, the tach cable is broken, so no tach reading for now.
Tom
69 2000 - Mr. Hyde
Portland
http://www.datsun2000.com
http://www.nowroc.org
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Stephen Wan
Sent: Monday, August 07, 2006 3:30 PM
To: Mtbdavid2@aol.com; datsun-roadsters@autox.team.net
Subject: Re: need advice on checking charging system
Is the sense wire (white one I think) from the plastic connector connected
to
the positive pole of the alternator and the other wire left unconnected?
Aside from that, the internal voltage regulator is probably bad. I ended up
with one that went bad after 1 day of installation, I exchanged it for
another under warranty and had no problems since.
Steve
70' 1600
----- Original Message -----
From: Mtbdavid2@aol.com
To: datsun-roadsters@autox.team.net
Sent: Sunday, August 06, 2006 2:14 PM
Subject: need advice on checking charging system
Hi all,
I have a feeling my charging system is not working correctly. I have a
brand new battery, fairly new gear reduction starter and a new
alternator.
After driving a while and then turning off the motor it has trouble
restarting.
If I start the car and disconnect the negative cable to the battery the
car
immediately dies. I put a voltmeter on the battery before starting it I
register about 13 volts and I get the same with the car running. How do
I
test
the charging system? Is there something else besides the alternator that
could be bad such as a voltage regulator or is the voltage regulator
attached to
the alternator? I have a new GM alternator. Is it possible there is a
wiring
problem which I can test? Any help would be appreciated.
Regards,
David
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