Megajolt To Sniper

[Kiwijibo]

Working with a Mazda MX5 motor, have a Megajolt/EDIS-4 ignition and need an RPM signal for the Sniper fuel injection system.

The Sniper wants either a coil negative signal (yellow wire), points positive signal (white wire), or signal from an MSD box (purple/green wire pair).

Question is, anyone know which of the Megajolt/EDIS-4 wires would provide (or how one of them could be manipulated to provide) a signal the Sniper can use?

[brentp]

You have a number of different options sourced from either the EDIS module or the Megajolt unit. Check the Megajolt installation guide on our wiki to see what kind of outputs are possible.

[Kiwijibo]

Ok... regarding the EDIS4 by itself... according to the installation guide:

Proper VR sensor polarity = spark at plugs
Backwards VR sensor polarity = no spark at plugs

So if I have spark at the plugs then the Crank Position Sensor is not wired backwards, correct?

Further, if I have spark at the plugs then the trigger wheel/sensor gap is within an acceptable distance, correct?

[brentp]

So if I have spark at the plugs then the Crank Position Sensor is not wired backwards, correct?

Further, if I have spark at the plugs then the trigger wheel/sensor gap is within an acceptable distance, correct?

#1 The crank position sensor is wired correctly.

#2 Yes, although if the distance is marginal, you may have unstable spark and therefore unstable engine operation.