However Peter has the Pertronix installed, so instead of protecting the
points, the ballast resistor protects the Pertronix from burning out, right? It
is a 1.6ohms resister. And you can tell that everything is doing it's job by
the coil not getting HOT but just WARM....and also using a voltmeter for a
specific reading?
TIA
Linda
-----Original Message-----
From: John F Sandhoff <sandhoff@csus.edu>
To: Peter Harrison <granvillecomputing@hotmail.com>
Cc: datsun <datsun-roadsters@autox.team.net>
Sent: Sat, 14 Feb 2009 7:14 pm
Subject: Re: [Roadsters] Eliza Now Va
Speaking of ignition wiring, it was written:?
> So the B/W wire goes from the ignition switch through the ballast and?
> hooks up with the y/w and then goes into the + side of the coil. Why?
> does it do that and what effect does it have. And what is the point??
?
Easier starting.?
The 'run' position of the ignition switch provides voltage thru the?
ballast resistor (B/W). The coil then 'sees' about 6 volts during normal?
operation. More importantly, this also limits current thru the points?
(without the ballast resistor you'll likely burn out the points).?
?
The 'start' position of the ignition switch not only provides voltage?
to the starter solenoid, it also provides voltage directly to the coil?
(Y/W). This full voltage provides for a more powerful spark to help?
ignite a cold fuel mix (and halps compensate for the battery voltage?
dipping during the start cycle - the load of the starter will pull the?
voltage down to 10 or fewer volts. That's why the lights dim when you're?
cranking).?
?
BTW, early Roadsters don't have this bypass circuit.?
?
-- John?
? John F Sandhoff sandhoff@csus.edu Sacramento, CA?
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