VEHICLE POWER SOURCE APPARATUS

A vehicle power source apparatus includes a first positive-side relay, a second positive-side relay, and a positive-side switch unit. The first positive-side relay is provided on a first positive-side branch path between a battery and a first power-supplied object. The second positive-side relay is provided on a second positive-side branch path between the battery and a second power-supplied object. The positive-side switch unit is provided between a first positive-side conductive path, which is a part of the first positive-side branch path that is closer to the first power-supplied object than the first positive-side relay, and a second positive-side conductive path, which is a part of the second positive-side branch path that is closer to the second power-supplied object than the second positive-side relay.