Some solenoids have an "I" terminal (ignition). Others have an "R" terminal (resistor). Either way, the big wire goes to the inboard terminal (S) of the solenoid cover to carry the current needed to energize the solenoid. The surge current needed for the "pull-in" winding to overcome the tension of the return spring approaches 50 amps for a fraction of a second. It's usually a purple wire if you have a factory wiring harness, or an accurate color code repop. Or you can just ignore the advice of some of us who have "been there- - - -done that" for several decades.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!