See if it happens again sometimes when hot they would fail the one box was better than the separate boxes also if you don't here it check the two wires one is neg to lock l think one was red in color that one is neg don't ask me why they used red for neg the other is positive you should get a click when you turn key on for a second and then when cranking if you have positive at fuel lock wiring and neg l would check fuel lock this system was not very good it would gum up and lock would stick closed also same problem with converter it would gum up and have problem starting when cold