No start - what to check

Good Gawd, folks. "Guessing" what component is no way to fix this. Get a test lamp/ multimeter, go to MyMopar and download the service manual (free) and maybe the aftermarket wiring diagrams there.

This is LIKELY in the neutral safety (if auto) clutch safety (if stick) / starter relay/ ignition switch circuit.

Your STARTER RELAY has TWO "flag" "blade" "spade" AKA flat "push on" terminals. One of those RECEIVES power from the ignition switch "in crank." Therefore that wire should be HOT anytime the key is twisted to start.

Next, the relay must GROUND through the neutral safety/ clutch safety switch.

Look up in the manual/ wiring diagram the color. (most are yellow is start, some other color (brown?) for the neutral switch.

If the yellow/ start wire is getting power with the key in "start" then put your meter on the remaining "push on " post and see if there's power there. NO? Likely the relay. Yes? Then the switch is not grounding

Automatic? Hold the key in "start" while moving the lever from park -to- neutral and back "wiggle" the shifter

Stick shift? Clutch pedal safety switch is grounded on it's bracket, one wire goes through the firewall on a separate gromment to the relay. Check it for continuity with the clutch pedal depressed.