Won't Start, I have a 75 1.8L engine. A month ago the car started and drove just fine. Two weeks later it won't start. Options

[Double D]

I have a 75 1.8L engine. A month ago the car started and ran just fine. Two weeks later the car would not start. The headlights come on but still doesn't start. I checked the battery, started motor, ground to the chassis, fuses, relay board, ignition coil and ignition switch. I can jump the starter motor with a screwdriver. I'm just not getting juice to the solenoid switch. Any suggestion

[porschetub]

I have a 75 1.8L engine. A month ago the car started and ran just fine. Two weeks later the car would not start. The headlights come on but still doesn't start. I checked the battery, started motor, ground to the chassis, fuses, relay board, ignition coil and ignition switch. I can jump the starter motor with a screwdriver. I'm just not getting juice to the solenoid switch. Any suggestion

Looks like you have done a few steps to find your issue,how did you check the ignition switch ? the only way to test it is to get a second person to turn the key to start position and then meter the yellow solenoid wire and see if you have 12volts if not you have a bad switch.
In my case the engine would crank and then later not ,other functions did the same thing ,a short time later I had no starter power and the switch had totally failed.
These faults occurred over a period of a few days,I fitted a new switch and everything was normal again and has been ever since.
If you have replaced the switch recently don't assume that isn't the issue as other folks on here report early failures with some replacements.