The purpose of the ballast resistor is to drop the ignition voltage during
normal running. It will usually run about 8 volts, give or take.
When cranking, the battery voltage drops considerably thus lowering your spark
voltage making the car hard to start. This is especially true in cold
weather.
The resistor is bypassed (effectively shorted) while cranking so full battery
is delivered to the coil to make up for the lowered battery voltage during
cranking.
If the extra wire you are talking about goes to the coil side of the resistor
this is what it will be. The other end goes to the starter solenoid. If the
wire is on the ignition switch side of the resistor it would be anybodies
guess. But, I'm betting it's the bypass wire. If so, simply cap it off and
ignore it.
Best regards,
Fred Schroeder
'70 2000
SRL311-13359
TDROC
Home page http://schroeder-family.us
e-mail roadster@schroeder-family.us
----- Original Message -----
From: Richard Hugi
To: datsun-roadsters@autox.team.net
Sent: Monday, September 27, 2004 2:53 PM
Subject: WIRED
Greetings Everyone
After installing my EI Dizy, I found two additional wires connected to
my ballast resistor. One wire goes to a retrofitted electric fuel pump
at the tank, the other goes somewhere, perhaps the radio. Gary Boone
suggests that I should not use the ballast resistor to supply the fuel
pump, so I am seeking advice on where to wire it to. I am apprehensive
about this because every wire I touch crumbles in my hand, and the fear
of having electrical problems has put me on edge. Any suggestions?
Thanks
Richard
67.5
Santa Cruz Calif.
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