Hi all, I now have my ac and heater going, with the help of the group menbers, and again I would hate to not have accsess to the search forum, I would be lost. I have all vents opening correctly, I have replaced the following; push button control, new fan, new compressor, condenser, ac hose, acumulator, I have removed # 11 fuse from fuse box and replaced it with 30 amp fuse in a water proof housing. I have done everything suggested and still, once in a while the 30 amp fuse blows. I don"t get it. No rhyme or reason, works fine for days then it blows. When the system is working, it is great. The unit keeps the car at an even temp as it was desigened to do, I couldn't be more satisfied. If somone could give me a direction to go in, It would be great. I just am at a loss as what to do next. My car is a 83 300sd. steve