Electrical Diagrams in Rhino

We use Rhino to also generate our wiring diagrams and it is a fairly laborious task. I am wondering if anybody knows about any plug-ins or tricks for making this process easier and faster. A couple hiccups that we run into are wire number generation and having to individually generate lines that represent wires rather than clicking endpoints and having it generate lines that are relatively neatly organized (only running vertical and horizontal). Also a library of symbols would be helpful if anybody has a resource for that. Thank you.