I'm looking for some software to lay out some electrical schematics in that's compatible with automotive 12 volt technologies. I'm hoping to find something that's a visio-like software where I can drop bosch relays, switches of all varieties, resistors, lamps, motors, the whole gamut of components you'd see in an automotive environment. I can hand-draw the schematics, but I'm hoping to be able to make nice professional looking ones that I can share with the GMTC community. Anyone know of anything that will fit the bill?