An electrical connector for downhole well equipment has a housing having a cavity. A rigid rearward insulator is sealed within the cavity, the rearward insulator having a rearward insulator passage. An electrical conductor has an insulation layer and extends in a forward direction into the rearward insulator passage. An electrical connector terminal joins to a tip of the conductor. The insulation layer has a forward end spaced rearward from the connector terminal, defining an exposed portion of the conductor between the forward end of the insulation layer and the connector terminal. A grommet of resilient electrical insulation material within the rearward insulator passage has a grommet passage with a forward passage portion extending around the connector terminal and an intermediate passage portion sealing around the exposed portion. The grommet has an outer surface in sealing engagement with the rearward insulator passage.