Handle Bar wires 78 1/2 FXS

[Marnat3]

I am redoing the harness an my 78 1/2 FXS and was wondering do i need to have the small white jumper wire from the start button to the run / off switch? Doesn't the key switch take care of the run / off? 
This is my first attempt at rewiring. Thanks in advance.

[bump]

You need the jumper for the kill switch on bar, it kill ingnition and starter. I have a 78 FXS that I bought off showroom floor brand new.

[Marnat3]

Thank you.