I have a 97 P38. First, the climate control and radio stopped working but came back on a few minutes later. This happened 3 times over a two week period but now it's out and won't come back on. Also, when it was working, the AC wasn't working well and the book was displayed on the climate control screen. I changed the R7 relay which controlled the driver side blower motor and it started blowing colder/harder and the text book went away - for about a day. Then the textbook came back on and a couple of days later the same relay blew again. A few days after that, the whole system, including the radio, went out. Any ideas?