02 mustang gt won't start
My car hasn't starter for 4 days iv changed the
starter and alternator had battery tested traced
grounds and checked fuses it was just giving a
single click now I can't even get that any
suggestions
Note the diagram for starter motor. I did glance at your security system, it is starter motor disable among other components, just something to think about. Pull the starter relay, use jumper wires between terminal 30 and 87, that is the switch side of relay, terminal 30 is hot all the time and fuse protected. Using the jumper, the starter motor should crank the engine. If you try that make sure transmission is in park or neutral and parking brake is set. Make sure vehicle can't move. Note the right side of relay in diagram, that is the control side of relay, that top wire is voltage and bottom wire is ground. You can use a test light between terminals 85 and 86, have helper turn key to crank, if the lite comes on, you have voltage and ground. If security system is involved, even if you get to crank, it still won't start. good luck
Just to add, battery has a full charge and connections all good?