Does this connection to tone require a resistor or do I not need one as usual diagrams have two links to the tone pot? Is this connection from the ground wire or am I being stupid.
The tone pot connection here is a standard tone pot arrangement.
The tone pot itself is used as a variable resistor. From the volume pot connection you can go volume pot > capacitor > tone pot resistor > ground or volume pot > tone pot resistor > capacitor > ground. Electrically identical in operation.