These Visio stencils (US and metric units) contain all the shapes and symbols you require for creating your electronic circuit diagrams in Visio. Below are some sample shapes for you to download and try out. Most of the shapes have custom properties for manufacturer data, part numbers etc. so that you can create BOM (bill of materials), parts lists and inventories using the standard Visio report tools. Push buttons, relay contacts and switches have an action on their right-click menu to swap between open and closed contacts (and the switch moves - you can use this to animate the switches), and all diodes have a menu to select black or white fill. The stencil "automotive devices" is included in both the electrical and the electronics stencil sets. All shapes have connection points at suitable locations. Use the standard Visio connector tool to join the shapes. Here is a larger scale illustration of all the shapes in the electronics stencils. If these are not the shapes you want then maybe you want Electrical shapes.
to join the shapes.