folex187

I'm installing Cyberdyne gauges and the directions for the oil pressure gauge say that the gauge must be grounded to a "GOOD ENGINE BLOCK GROUND"

Does this mean I have to run a ground wire from the cabin to the intake manifold or can I simply ground it to the frame?

xviper

Your sender is most likely screwed either directly into the engine block or indirectly via a flex hose. In either case, it will automatically be grounded. No need to worry about this any further.
Your actual gauge inside the car will likely need a power feed, an illumination feed and a ground. This ground can be on any ground connection under the dash. There's one just above the fuse panel on the frame. It's the one with a large bolt and an "octopus" of black wires going to it. Just "T" into any of those black wires.

Billman250

There is also an empty threaded hole next to the area Xv is talking about. Makes a nice point for new grounds

folex187

Ya, that's where I have my wideband grounded to. I was just concerned when I read the directions and they said the actual oil pressure gauge had to be connected to an ENGINE BLOCK GROUND underlined and in capitals:

Oil PressureGauge

2. Black wire connects to engine block ground. (NOTE: Ground wire from gauge must be connected to a good engine block ground for gauge to work properly!)


The boost gauge doesn't even show that it has to be grounded which really confuses me..