FBO's black HEI ignition box
your points are just a switch, two contacts that touch to switch the coil on and part to switch it off
switch off the coil to trigger a spark
with a module or igntion box, mopar or hei you have a silicon based emulation of a switch
they use a big industrial transistor to switch the coil off and on
pin 5 switches the coil off and on
hence in that diagram gets called the switcher...
not right but not wrong. cos it does switch
i'm sure better terms exist
depending on the type of box
you have 12 volts into pin 1
and 12 volts to your coil +
if the switcher, pin 5 is at 0v,then the coil is on. 12 volts at coil + and 0 volts at coil - means flow of current in coil...
if the swicher pin 5, is switched to 12 volts, the coil + and coil - are both at 12 volts, both the same, coil sees no voltage or difference between + and - so the coil is off.
switching it off causes the spark.
basically all you need is pin 5 to coil - and pin 1 to coil + with 12 volts connected to coil +
and the module bolted to the car and earthed through the screw next to pins 1 and 5. and that is the "high power" end of the install done
other end of module is all about tiny trigger signal from the dizzy.
proper HEI coil works better than the blaster 2 in this kind of retrofit set up and costs $25 rather than $80
dave
as in switch that switches the coil off and on
your points are just a switch, two contacts that touch to switch the coil on and part to switch it off
switch off the coil to trigger a spark
with a module or igntion box, mopar or hei you have a silicon based emulation of a switch
they use a big industrial transistor to switch the coil off and on
pin 5 switches the coil off and on
hence in that diagram gets called the switcher...
not right but not wrong. cos it does switch
i'm sure better terms exist
depending on the type of box
you have 12 volts into pin 1
and 12 volts to your coil +
if the switcher, pin 5 is at 0v,then the coil is on. 12 volts at coil + and 0 volts at coil - means flow of current in coil...
if the swicher pin 5, is switched to 12 volts, the coil + and coil - are both at 12 volts, both the same, coil sees no voltage or difference between + and - so the coil is off.
switching it off causes the spark.
basically all you need is pin 5 to coil - and pin 1 to coil + with 12 volts connected to coil +
and the module bolted to the car and earthed through the screw next to pins 1 and 5. and that is the "high power" end of the install done
other end of module is all about tiny trigger signal from the dizzy.
proper HEI coil works better than the blaster 2 in this kind of retrofit set up and costs $25 rather than $80
dave
