[dead-eye]

I've gone back to stock and don't need my OEM Lamco boost gauge. I've got a vacuum line that goes from the engine into the back of the gauge. If I disconnect the line from the gauge, where do I re-connect to?

 

[RoadRunner]

The line that runs from the engine to the interior should be tee'd somewhere in the engine. Just follow it back to the engine and replace the tee with a coupling.