Gauge Installation on a Gen 2 Dodge Cummins

Make an incision on the rubber plug and pass all of the wires and tubing through.  Pictured above are the brown thermocouple leadwire, orange trans gauge sensor wire, black boost gauge tubing and electric fuel pressure gauge harness (wire loom).  After you've run all of the wires through, simply push the plug back in place.  The 2 barbed pushpins hold the plug in.  If you're hole in the plug is tight around the wires/tubing you won't need to add RTV silicone to seal it.