Electrical Diagrams – mac-pac Dec 14, 2005These electrical schematics are Doug Raymond’s conversion of BMW and Haynes diagrams into a ladder logic format, which you may find more convenient for troubleshooting. The 12V power and rider inputs are at the left and the output devices are on the right. Comments or corrections are welcome, via email to Doug.Honor Roll · Banner · Eating · About · Posters · Trips Wiring Diagram Software - Draw Wiring Diagrams with Built Wiring diagram software with built-in stencils for fast and efficient electrical wiring diagram design. Easy to create wiring plans, schematics, circuit diagrams and more. Products.