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electronic ignition
Posted: Fri Jan 08, 2010 9:48 am
by subyleone
Hi. have almost completed an EA82 conversion to an L series originally equipped with an EA71. The 82 has an electronic distributor with 2 wires coming out of it. what are these supposed to hook up to? power and ground? or is there a computer or something else i need? cheers
Posted: Fri Jan 08, 2010 10:21 am
by Matt
They are supposed to hook up to the coil. Positive and Negative side.
Posted: Fri Jan 08, 2010 12:57 pm
by steptoe
What colour wires do you have come from the dizzy? Please use main colour and colour of tracer line of each wire. Got a number off the dizzy? and is the coil one to match?
Generally what Matt says is correct. The wires hook up to the coil terminals neg and pos, one to each. Sometimes the insiulation colour of the eye terminal helps match up with other wires terminating same position.
Posted: Sun Jan 10, 2010 6:56 am
by subyleone
would that then mean I would also need a 12v coil? The car originally had points so it has a 6V coil with Ballast Resistor.
Posted: Sun Jan 10, 2010 8:26 am
by steptoe
Or 9V coil was with points? The best way to check the coils voltage is when it is actually running in the vehicle it was meant to be as I have read, but yes generally from what I have read electronic ignition do not normally run ballast resistor and coil gets full 12V. Before I knew this I used to replace points dizzies with later model electronic ignition dizzies without ever thinking of changing or upgrading ignition coil, had no ill effect on powerless revving 1300 and 1400 Mazda engnes.
Posted: Sun Jan 10, 2010 9:11 am
by fredsub
thats right, the electronic "points" dizzy does NOT have a ballast resistor,
because it manages the dwell time, ie analogy of "points closed" before they open for the spark.
Thats why the coil always has direrct 12V.
If IGN is on, and engine not rotated, the dizy will switch off the "points"
(switch off coil current) so the coil doesn't burn up.
The mechanical points are dumb, the coil ON time == "points closed" is
just about the whole time.
So if IGN is on, and engine not rotated, coil is still on,
The ballast resistor gets around this by just making the voltage lower to the coil at this time, so it doesn't burn up.
So as you can see the electronic dizy is a huge improvement at the START time, just when you need it too.
Its also why some people get unstuck trying to add on a MSD ignition amplifier, etc to the electronic dizy.