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Check the triggering mechanism, IE distributor, sounds like the module may be dead. With everthing installed, and key on, disconnect the 2 conductor wire coupler to the distributor. With car out of gear, pull the lead from the coil to the distributor cap and lay it near a good ground (still attached to the coil) Use a short jumper wire and touch the two prongs in the coupling that was disconnected from the distributor,each time you break the circuit you should see spark at the grounded coil lead. If not check your swiched 12 volt source.
If it works when doing the above the box and power to it are OK, If not check the individual power leads, the large red one and the small red one that switches the box on. Do the same test over.
If it works the problem is now confined to the trigger mechanism, (the distributor) either the module, the connections to the wire loom (two pronged plug) or its not spinning as others have suggested.