[Mak7995]

I have a 2015 chief vintage. Where is the starter solenoid located?

Also, can I use another battery grounded to the frame and touch off my starter without causing any damage to the bike?

 

[theMucker]

I have a 2015 chief vintage. Where is the starter solenoid located?
Also, can I use another battery grounded to the frame and touch off my starter without causing any damage to the bike?

The starter solenoid is mounted to the left side of the anti-lock brake controller under the chassis, mounted to the back of the engine case.
Like any other bike, you CAN power the starter with direct contact to the chassis and the switched side of the solenoid or at the starter lug, but be prepared for an electrical arc which may damage the contacted parts.