Ok, rather than put the AM/FM/ cassette radio that came with my rambler in the stock location on the car, I decided to put it into a wooden box w/ 2 speakers, so me and my mom went to get some scrap 1/2" plywood we had to build the box, and a couple sections of laminate wood flooring we had left over from our kitchen remodel, to use as the face panal... anyway, it's built now and compleatly wired, for power I used a 12v assessory plug I got from walmart, it's 5A fused. I wired the radio correctly to the diagram on the radio top and directions said to do.. it needs no memory, so theres no constant power wire.. it has a ground wire and a place that a mount strap goes, and pointing to the bolt/ nut that sticks out from the back that it mounts to, the rear connections diagram says it goes to chassis ground, so I connected a second ground wire to it... now, I plugged it in and turned it on, and it instantly popped the radio fuse
I also have a cigarette lighter plug wired into it ( for other assessorys I may use ) and it worked fine, so I replaced the fuse and tried it again, and the assessory plug fuse blew so before I replace it and try again, what am I doing wrong?