Oil Pressure Gauge install questions

Does an electrical oil pressure gauge need a voltage limiter, e.g. a resistor to limit voltage? Will the gauge and sender both need a live wire to them? Will the length of wire be limited? Will the gauge and sender be matched or be specific to the engine? Will an after market supplier provide this information? I've had not been able to determine these things by viewing catelogues on line.
Thanks, Richard.