Grommets - Repair/Replacement And Additional Circuits

Solid (over moulded) grommets are non-repairable and must be replaced by the installation of a new harness. Grommets with plastic inserts for panel retention - the inserts can be removed and replaced where necessary.

EPDM (Rubber) grommets: if the grommet is damaged then a 1 off attempt to repair with a suitable automotive grade silicon sealant is allowed. When the repair is completed, test for leaks (noise/fumes/water). If this fails to seal then the harness must be replaced.

If any vehicle accessories are added that require additional wires/circuits to pass through a sealed grommet then these must be routed through the service nipple. The service nipple must then be sealed using a suitable automotive grade silicon sealant and secured as shown below.

Rubber Grommet With Service Nipple 

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC