Ignition no spark output?

Electrical problem
1977 Ford F150 V8 Four Wheel Drive Automatic

when my truck is cold it stars right up but if I drive it till the motor is at regular teperature it should be and turn it off it wont start till it cools down alll the way. It cranks over just wont start like its out of gas but its not getting spark I replaced the coil and tested it to the distributor no spark to the destributor.

I have replaced the ignition module to. I clened the plugs that that plugs into still nothin. I first thought maybe it was the coil because I tested the wire from the coil to the distributor and nothing when its hot so whatever it is is before the coil I believe

I have a 1991 Ford F-150, it died at a light and I had it towed home. Question is, I have changed the Coil, ICM, Pick-up in the Distributor, did the light test, checked the Voltage to the ICM from the SPOUT line Less than.5 volt ac, from the SPOUT split connection back to the PCM is 4.5 ac volts? Any help would be appreciated. Thanks And if it is the PCM itself-Where is it?

Hello thanks for your time.I have a 1993 ford f150 with a 302 and 178,000 miles. It started running rough then died. It has power to both wires into the coil but no spark coming out of it. Have tryed 2 diffrent coils. Same results. Have replaced the icm and the ignition switch also. Should I try replacing the engine computer?And also where is it located?
Thankyou