Getting 12v ignition tap for after market head unit chevy colorado 07?

haha

New member
i recently installed after market head unit stereo (sony) into my chevy colorado 07 , the harness doesnt connect ignition wire (red) to the factory , so i tapped from a wire to ac control underneat the stereo .

It is working as i wanted except when i crank up my AC above 2 (my ac run from 0-4) the radio shut down :(

Im thinking of running wire to fuse box under the hood but im not sure how or where to connect the wire to, do i need special tool or just stick a wire in?

Thanks!
 
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