need help with blower diagram

[KEVIN D TOBIN]

take a look at this diagram,the blower doesn't seem to make sense to me, the power comes in from the breaker,but what is that wire coming in right before the switch ?

 

[Express 390]

take a look at this diagram,the blower doesn't seem to make sense to me, the power comes in from the breaker,but what is that wire coming in right before the switch ?

Try again no picture !