Blowing Maxi Fuse immediately...?

It's easier to help when we all speak the same language.
Describing the connecting wires by color is generally difficult to decipher.
It looks like Painless has some painful numerical coding on their drawings.

My suggestion is to describe the wire by its connection points, and/or use the Chrysler equivalent.
Chrysler wire name method is pretty straight forward.
On the devices (like switches) the letter convention is slightly different, but if you are using that to describe the wire, just make that clear.
For example on a device B or Batt is a connection that somehow ties back to the Battery positive.
On the starter relay in the above 1963 diagram, St connects to the Starter Switch, and Sol connects to the Solenoid terminal on the starter.

On the wiring diagram, three wires connecting at the starter relay are coded S for Start circuit.
S2 is the wire from the starter switch to the St terminal on the relay
S4 is the wire to the neutral safety switch/clutch switch to insure the car is in N or P to complete the circuit and allow starting.
S5 is the wire connecting the Sol terminal on the relay to the Solenoid terminal on the starter.
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A = bAttery circuit = any wire connected to the Battery Positive.
R = alteRnator circuits and R6 is almost always power out from Alternator
J1 = Feed to Ignition switch
J2 = Ignition Run (Feeds engine devices and alternator field)
J3 = Ignition Start
H = Horn
L = Lights
Q = Accessories (anything not needed to run the engine. One Accessory feed is always hot, the other is switched on by the key)

Since you are using Painless? wires my suggestion is to use the circuit names rather than the Chrysler coding.
The circuit names and the connection descriptions will help insure your new wires functionally do what they are supposed to do.