2000 elantra radio issue please help..
 

Just bought this car. It had an aftermarket stereo that worked just fine, just not my style. I removed it and put in a pioneer that I bought a while back. I wired it up turn the car on and nothing... I unwired it and wire the old radio back up (the one that was working a few short minutes before) and again nothing.. took out the voltmeter and no power at the red or yellow wires. Checked fuses, the 10 amp fuse was blown. Put a new one in and still no power in red or yellow wires.. but did not blow this fuse.. im confused and need help.. also the interior light stopped working and so did the chiming when the door is open.....