MSefi.com read only forum (Jan.15,2018)

I have a megasquirt-II upgrade and I'm installing a junkyard EDIS VR and module using a 36-1, 8" trigger wheel from DIY. I'm trying to set the timing for "limp home mode and I'm not getting a hot enough spark to trigger two different timing lights. I pulled #1 wire off its plug and put an old plug in it and grounded the plug to the chassis. I get a cyclic spark, but not very blue in color, more yellow. I unplugged the coil pack and attached a DMM to the red wire(+12vdc) and the other to the lead for one of the coils, in the plug comming from the EDIS module, and the voltage starts at approx. 12.5vdc and drops to a steady approx. 8.5vdc when cranking begins. I measured the resistance of the coils, from the terminal the red(+12vdc) lead connects to, to each of the other three terminals and read the same 1.2ohms for all three coils. I thing the EDIS-6 module isn't providing enough current for the coil pack, because the resistance seems reasonable to me. I can't find any info on how to test a module or coil pack, does anyone know to check these or if these values are good or where I can find the specs. Thanks, pj

First , check the polarity of the VR sensor. Seems to be a common problem.
Just swap the VR wires and retry the spark.
If spark improves , great. If not swap back to original polarity.

Second problem can be that the EDIS module really needs resistor plugs and/or wires in the HT circuit
to work well. And clean plugs.
Make sure that each sparkplug + plug lead is more than 5 kOhms.

Try to get a good spark by and watch the spark directly on the plugs in air .

EDIS and timing lights also a bit tricky- Many inductive clamp timing lights only work on one
of the plugs in a pair, regardless how the sensor is clamped on.

Then find out which lead in a pair the timing light fires on .

Good luck

Heribert