Minimum wiring needed to start engine

[wheels78ta]

I getting closer to starting the engine for it's break in period.

What is the minimal wiring needing to do this.  I don't need the lights or anything like that.  That's for later.

I will plug in the Fuel gauge, Volts gauge, Oil pressure gauge, Water Temp gauge and tach. 

I have some wiring already hooked up but wanted to make sure I'm correct.

[aussieta]

all you need is starter motor and ignition coil and engine ground
oil pressure and coolant temp would be advisable, which means cluster power and sensor wires