5A and 5B are a plan view and a longitudinal sectional view respectively showing a relay mounting part of the electrical junction box of FIG. 3; [0053]FIG. 6 are a plan view and a longitudinal sectional view respectively showing a fuse mounting part of the electrical junction box of FIG. 3; [0054]FIG. 7 is a longitudinal sectional view showing a first step in a method of manufacturing the electri