Then you need to get out the volt meter or test light. Can still be a fuse relate problem as fuse holders can fail.
Sorry but that is a simple wiring schematic so you need to find some one can do the electrical testing. Basically first you got to have voltage to the B terminal of the ignition switch. With the ignition switch in the run position voltage out on terminal L and in the start position voltage out on both L and S terminal of the ignition switch.