1937 Terraplane coil power routing

I have looked at many photos of the engine compartment online and everyone is different. There are two holes in the firewall. It looks like the larger one by the steering column has the dash power wires and lighting wiring. There is a smaller one closer to the engine that has the speedometer cable through it. I was also going to use the same hole for wires for the temperature and oil sending units and the wire for the starter solenoid. Does the coil power wire pass through the same hole? I’m trying to finish a restoration that someone else started. Thanks in advance for the replies.