It amends the FMVSS to make clear the allowance of high voltage connectors that require the use of a tool to separate from their mating component, makes three minor technical corrections and harmonizes FMVSS No. 305 with Global Technical Regulations (GTRs) No. 13, Hydrogen and Fuel Cell Vehicles, and No. 20, Electric Vehicle Safety. The FR was based on the Notice of Proposed Rulemaking (NPRM) issued February 28, 2019 (84 FR 6758).