Car won't start

It's a wiring issue. You should check the heavy guage wires for rot spots, they're notorious for that problem and typically rear their heads when the temps change seasonally from hot to cold or cold to hot (spring and fall)

The problem is in the starter system circuit(s). Check/inspect the condition of the battery cables & connections to the starter & grounds - replace/repair/correct as needed. Next, inspect/check the starter clutch pedal position switch - repair/replace as needed. Next, starter relay operation and connections. Of course, inspect/check all wiring connections. The burglar alarm relay is 'normally closed' contacts unless the alarm is activated - in which case the alarm must be 'reset' (deactivated) to re-close those contacts. You mentioned front end collision damage - definitely inspect all wiring there - repair/replace as needed.