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Message: <blockquote data-quote="Wayne" data-source="post: 753235" data-attributes="member: 9652">95 mustang 5.0 ignition checkA. Ignition coil check.1.  disconect all wires from coil check resistance of primary side {LOW VOLTAGE SIDE} should be from 0.8 ohms to 1.6 ohms if not replace coil.2.  check between negitive primary and secondary temanial {spark wire termanial} should be from 7.7 ohms to 10.5 ohms if not replace coil.3.  check between primary and ground it should be about 10 meg ohms to ground. if not replace coil.4.  with switch on engine off check for 12 volts on primary positive connector red/light green wire if not check circuit. Repair as needed.B. Ignition module and stator check.Note: before any other checks unplug ignition module , check ignition module connector ground. The black/light blue wire. Should be less the 5 ohms between it and the neg battery ground. Repair as needed.1. check for power to ignition module. Termanal 4 red/light green wire. Switch on engine off.    12 volts if not, Repair circuit as needed. If good next step.2. check for power to stator at distributor red/green wire. Switch on engine off.  12 volts if not Repair as needed. If good next step.3. Reconect both connectors check for PIP signal with LED test light. Dark green wire terminal #1 on ignition module. back probe wire while someone else cranks engine and watch for LED flashes. If no flashes replace stator. If you have a PIP signal and everything else checks good but you get no fire from coil replace ignition module.Note: you can check for a SPOUT signal but that would be a case where the car runs but only at base timing.</blockquote>