92 Corolla Radio

A friend of mine bought a 92 Corolla for a winter beater. There was no radio in it, so he bought one from a junkyard and when he tries hooking it back up, he keeps blowing fuses, what is he doing wrong? More importantly, what does he need to do to get this radio plugged in and working?

Looks like he ignored the Toyota wiring kit and tried to d it himself. Get the kit.