Bummer
You can check a few things on the car as it could be several things causing this. First lift up backseat, on the left side of car is a single red wire-terminal # 50- that comes from the ignition switch to the starter solenoid. Put your test light here. It should light up when yuou turn the key. if it does not light up it is probably your ignition switch. if it does light up your ignition switch is ok. If it has juice take the connector apart and take a jumper wire from the + side of battery and put it to the wire heading thru the firewall to back of car. be careful as this will activate the starter if it is working

So make sure the car is in neutral and e brake on. If the starter turns over you will probably need a hard start relay kit. Common problem

if it does not start this way bad starter?
All this as long as it is not a 74 which has seat belt interlock system
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derf
No matter where you go,there you are.
My post are my opinion of what has worked for me but are not the gospel

What I post is what I do on my cars. I am here to try and help not to impress or boast