Gauge Installation on a Dodge 6.7L Cummins

his is a look at the engine side of the plate after plastic snap grommets have been installed. The larger grommet is for all wiring and the slammer ids for the boost gauge tubing. If you are not using grommets, you can just run the wires through a hole in the firewall plate. Just make sure that you chamfer both edges of the plate so that the wires do not chafe.