This paper explores some of the types of electrical simulation deployed in leading companies and the technologies that robustly link the mechanical and electrical worlds. Challenges that must be faced include cross-domain integration and synchronization, data management, and design change management. With these issues considered some examples of electrical simulation that depend on mechanical data are described, including simulation-based component selection and CAN network signal integrity analysis. Last, methods for consolidating electrical and mechanical data within a PLM environment are considered.