alright so i was hooking up a new car radio to my car and stuff but then i noticed that i wasnt getting power in the constant wire. so i ended up hooking up the constant wire(RED/ BLACK) and the ignition wire to 1 (BLUE) wire that gave power. but now every time i turn off my car my radio's memory clears up. how can i fix my constant wire so it can receive power??

im seventeen and this my first car soo idk what to do

(Mitsubishi Galant 1997 ES)