Electrics

[trueno]

I've got a couple of little problems with my family's cars.

first - my mum has a Caldina, the aerial broke a while back and was replaced, but ever since we've had really bad reception from the radio. I assume it's amped like the one in my trueno, but I thought it would be powered by the same system that extends the arial? can anyone point me in the right direction, I'm thinking there's a loose wire somewhere.

The other problem is with the aircon in my sister's corolla (101). The green light on the A/C button blinks continuously and we get no cold air :\, every now and again it will work though, weird. What does it mean?

Cheers.