HOW SE DOES IT MAKE THAT A HEATER OF MY HONDA AGREEMENT 1991 DOES NOT FUNCTION?

How this is possible t h e heater o f m y Won't Honda Accord 1991 function? Hello I h a v e a Honda Agreement 1991 LX t h e A.C. functions good, w e l l t h e o n l y t h i n g w i t h t h e A.C. i s t h a t once I turn i t o n t h e the car starts to click. But m y The heater will not function a t all. The best read more [?

chevrolet camaro