WRONG!!
#3 can not be tied to the #4 wire. #3 is not for "accessory power".
#3 is the voltage sensing wire. Its purpose is to look at the voltage "at" the battery, so it can tell the voltage regulator what the battery requires. By running it through the ignition switch and the ammeter and all of the associated connections plus extra wire, you add too much resistance to that wire. On Red58's diagram the #3 should connect over to the Bat wire on the start solenoid.
The resistor wire in Cletis's diagram is not the coil resistor, I repeat, NOT the coil resistor. If memory serves, I recall it to be brown, brown/W and even pink wire in GM cars. It goes from the ignition switch down to the firewall connector/plug. On the other side of the firewall plug this wire(now copper) goes to the #4 on the regulator.
Your '59 never had an alternator, so it will not have this resistor wire. Just use a 10 ohm, 10 watt resistor from Radio Shack. If you want a idiot light, put it in parallel with the resistor.
By not using this wire to the #4 as Cletis said, it will charge, but not when you start the engine. You will have to rev the engine up before it will start to charge.
You can use the light, without the resistor and you will get the same result as above. It will charge, but not when you start the engine and the light will be on. You will have to rev the engine up before it will start to charge.
