How do you hook up the center console gauges from a 1986 fiero gt in a fiero 2m4?

Answer 1

You don't need the auxiliary gauges in a four cylinder Fiero. It does not suffer from the more intricate needs of the V6 engine that typically requires constant monitoring of the oil pressure.

If you are wanting to put one in for asthetics, then you have to first ensure that you actually have all the connectors and wiring that goes into the auxiliary gauge cluster. The gauges also utilize a different beauty cover assembly over the radio/HVAC shroud that you would need, and then you also need the metal bracket assembly that holds the cluster up itself.

Then for the oil pressure gauge you simply have to find your oil pressure sensor and tap into it. It should be located on the front side of the engine below the valve cover. For the volt meter, you would splice into the alternator charging circuit to monitor it's charging volts.