Some of these links might be useful:
http://www.triumphspitfire.com/ignition.html
http://ourworld.compuserve.com/homepages/JET_AV8R/Vision/Ignition/CDI.HTML
There's also a manual with troubleshooting suggestions:
http://www.triumphspitfire.com/images/cranemanual.pdf
I would agree with you: I would have thought with the unit energized, a spark
would be produced when the slits pass through the electric eye. Are you sure
there is voltage to the unit?
donny v
1978 MGB
In a message dated 4/13/2004 7:51:14 PM Eastern Daylight Time,
pokrefke1@comcast.net writes:
The PO of my car installed an Allison XR-700 electronic ignition module in
my MGB. There is, among others, a red and black wire coming out of the
control box: the red goes to the (+) side of the coil, the black goes to the
(-) side.
When turning the engine by hand, there is no change in voltage or continuity
from the black wire. The ignition was on, and as the slits passed the
electric eye, I would have expected to see the a change in the black wire,
similar to points opening or closing.
Do I not understand the principle of the ignition circuit, or is something
else amiss?
Thomas
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