ok, sometimes the car acts up. its a 90 Ex Civic.....problem is that soemtimes, when u turn on the heat, the radio does not work. Then u shut off the radio and the heat works...The other day the heat was not working at all. Now, its fine, but I would like to know what it could be for when it does it again.

Anyone have any ideas as to what it could be?

 

sounds like you got a nice electrical problem. Could be a ground or wires are shorting againest each other. Wouldn't know for sure unless I looked at it.
Pull both out and look are the wires and check all the grounds and fuses

 

hasnt done again, but imma take it apart this weekend to see what it is.

 

good luck and let us know waht happens