Okay so I bout a the sunpro 3 gauge cluster from a buddy and if course he don't have anything other than the gauges them selfs, so what do I need for the oil gauge?? And how do I hook up the water temp gauge? I have a 400 with edlebrack performer intake

 

Sunpro's are so cheap it's probably cheaper to buy a whole different set of gauges. The sending units for the oil pressure and water temp probably cost more than a whole new set. The volt gauge should have the wiring terminals already in the gauge.

 

you can pick up oil pressure by teeing off the oil pressure sending unit on the block right behind the intake manifold. usually the gauge comes with plastic tubing with a compression fitting that threads into your tee fitting. water temp gauge should have the sending unit hooked to the gauge it can plumb into the water outlet on your intake manifold where your radiator hose is hooked to.

 

To save you time and aggravation, follow this advice.

 

Agreed, the whole set is $30 new; don't bother with an incomplete set.

There are no sending units with mechanical gauges; that's the whole point. The oil pressure gauge uses a compression fitting and a nylon or copper tube. The temperature gauge uses a bulb that runs up to the gauge through a tube protected by a flexible coil. Usually the gauges come with a handful of adapters, reducers and fittings to make them universal.