Abstract: A sealing grommet assembly comprises a support plate having a seal well in which an elastomeric cable seal is disposed. The grommet assembly is made in conjunction with a wiring harness having an electrical end connector which also has an elastomeric cable seal. The grommet assembly and electrical end connector are processed in a juxtaposed relationship for inserting the electrical conductors of the wiring harness through the juxtaposed parts simultaneously prior to termination of the electrical conductors.