Is the system not working, or are you just installing it? As far as gauges, only the ampmeter has electricl wires hooked it, unless it has had electric gauges added. On the amp gauge one terminal has a wire that goes to the terminal on the starter switch that ha the battery cable hooked to it. Every thing else goes on the other terminal. If the gauge reads wrong switch the wires on the terminals. 
What type of altenator are you using. Is it three wire or just one wire? As far as the distributor goes a ignition resistor needs to be put in the line  from ignition switch to the coil and hooked to the + terminal on the coil. Electronic ignition could also be used. It gives a hotter spark and almost mantainence free.
Gary