Where can I connect the hot wire on my electric choke?

I've always hooked mine to the alt. light wire.I think its white on your car.that way the choke won't open with the key on and not running.The wind shield wiper works to but you would have to run it through an oil press. switch to keep it from opening with the key on and not running.My way there is no voltage to the choke until you start the engine and the field is excited on the alternator