Wiring Radio And Automotive Fuses Question

[SBVFD524 0]

I have a motorola highband radio and i have mounted everything the guy gave me a fuse tap and told me to use any 20 amp fuse that went on and off with the key. The only 20 amp i found that went on and off was my climate controles. I wanted to know if i will blow or screw up something if i do that?? is there a better option

[wcr20 17]

get an automotive relay of the proper rating - you can draw power straight off the battery or accessory point, and use a low current off an ignition circuit to switch the relay. be sure to put apprpriate size fuses on both the power draw and ingnition sense lines