starter just clicks
clean battery terminals if that don't work bad starting solenoid Hotwire off battery runs to it
Switch on the headlights and try to start it. Do they dim badly or go out? If so it's going to be a battery or battery cable problem. Weak battery or bad/corroded battery cable connections. Or do the headlights stay nice and bright? If that's the case it's going to be a bad starter, bad starter solenoid, or bad neutral safety switch. HTH. -Jim
It could be your netural safety switch is bad.
Looking for a Used Mustang in your area?
CarGurus has 46,705 nationwide Mustang listings starting at $750.
Search Ford Mustang Questions
Ford Mustang Experts