[DeTomaso] Choke and Alternator Connections

SOBill at aol.com SOBill at aol.com
Sun Aug 6 13:23:00 EDT 2006


Joe,
 
The electric choke should be wired to the center connection of  alternator 
stator winding. This is a small terminal on the back of the  alternator with a 
Green/Red wire attached. This terminal produces 6V only when  the engine is 
running. If your choke wants 12V, the choke warm up will be slower  than normal, 
but this is still the simplest way to connect the choke as it is  all done on 
the engine.
 
If you feel you should use 12V, connect the choke heater to  the ignition 
switched 12V (the small Red wire) that feeds the MSD 6A  box.
 
To help with the voltage regulator wiring the Battery Charging  System 
diagrams are at 
_http://www.panteraplace.com/Electrical/BATTERY%20CHARGING%20SYSTEM%20(PAGE%201).pdf_ 
(http://www.panteraplace.com/Electrical/BATTERY%20CHARGING%20SYSTEM%20(PAGE%201).pdf)  and  the description of how it works is at 
_http://www.panteraplace.com/Electrical/BATTERY%20CHARGING%20SYSTEM%20(PAGE%202).pdf_ 
(http://www.panteraplace.com/Electrical/BATTERY%20CHARGING%20SYSTEM%20(PAGE%202
).pdf) .
 
In addition:
 
The Yellow wire goes between the starter solenoid Battery  connection (the 
big cable coming from the front of the car) and the A (for  armature) terminal 
on the regulator. This wire senses the battery voltage so the  regulator knows 
how to control the alternator.
 
The Green/Red wire goes between the Stator terminal of the  alternator and 
the S (for stator) terminal of the regulator. This wire senses  that the output 
of the alternator when the engine is running.
 
The Orange wire goes between the field terminal of the alternator  and the F 
(for field) terminal of the regulator. This wire controls the voltage  output 
of the alternator.
 
The Blue/Black wire goes between the Charge Indicator Lamp/Resistor  
combination of the Speedometer and the I (for indicator) terminal of the  regulator. 
This wire provides the initial alternator field current required to  start the 
battery charging process and controls the Charge Indicator Lamp based  on the 
alternator output.
 
I can't really help you with the one wire alternator  alternative.  I would 
poll the forum for input as many listers have sorted  this out. I would point 
out that "one wire" is somewhat misleading in that you  will need a second wire 
to control the charge indicator (if you want that  function to work) and a 
third wire to sense the battery voltage. Many "one  wire alternators" have I 
(for Indicator) and a B (for Battery sense)  terminals. These units would better 
named "internal regulator"  alternators.
 
 
SOBill  Taylor
sobill at aol.com


More information about the DeTomaso mailing list