Boostislife

Heyy, so i bought a new aftermarket radio right, i get the right addaptions, the wirings all correct, i got the right interface box thing that cost like 70$ but the radio still wont turn on, i tried checking the fuse and the fuse is fine. When i connect the old radio back in it works perfectly but then i try connecting my new one and it wont get power to the red wire somehow. I even tried connecting the radio to the battery but it still wont turn on. I kept buying and returning radios beacuse i thought meybe it was defected but i dont think the odds of me buying 5 defected radios sounds right. Please help.