The ignition module you installed- OEM or aftermarket?
With the ignition turned off- If you disconnect all wiring to the coil- install a jumper wire to the (+) side of the coil & then ground & un-ground the (-) side- will the coil then throw a good spark (jump at least 1/2" & bright blue? If so- the module's faulty- if not- coil's bad.
Be sure to do as kevin said also- check the ballast.
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