This is my setup.
I used the Quad 4 ignition module, if you take apart the quad 4 IDI cover, the ignition module has 3 wires coming out of it, a common wire (pink), and 1 for each coil (both are white). I traced the wires inside the IDI plastic thing to see which coil fired which plugs, one does 1 and 4, the other does 2 and 3. Then find out which wire coming out of the ignition module controls that coil.
I then used a stock DIS coil brick, gutted the ignition module out of the coil base, leaving just the frame for the coils to mount, and the connectors going into the coil, and soldered the 3 ignition module wires onto the tabs on the coil base. Check which tabs go where, one goes to both coils, this is the common, and then there is one for each coil.
Here is my coils and module that I mounted on the rear firewall:
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84 Fiero Sport Coupe #1192 :: 86 Fiero Base Coupe Quad 4 HO :: 1998 Dodge Neon EX 2Dr 2.0L DOHC Auto
[This message has been edited by befarrer (edited 09-12-2007).]