The way he drew it is just fine if his amp can handle a 2 ohm bridged load.supposedly 2 ohms since the pic u drew is not actually bridged, if it were bridged you would only have drawn 1 primary power line to both + and - to where at some point it is spliced to accept a small length of wire. In other words where u have 2 lines connecting to each + and - the should only be 1.