I have a 1992 Ford Econoline 150 conversion van with several problems. 1st of all, I have a duel a/c system with a rear "something-or-other" that has gone out AGAIN!!!! I had if fixed two years ago, at a great cost, and I thought the problem was solved. However, yesterday afternoon, the hottest part of the day, it went out again. I can not afford to get it fixed again so I went to my local auto parts store and explained to the guy behind the counter that the rear a/c went out and that the blower moter in the back was not working. It usually makes a loud whirring, humming sound but it wasn't doing that anymore and there was no air coming out of the back vents. So, I bought what I thought was the right part. I soon found out that the part was wrong and when I called the auto parts store to see if maybe the store made a mistake and sold me the wrong part, I was told that the part was correct for the problem I discribed. It is the WRONG part first of all, and second, I have no clue how to change it out. I can not figure out how to remove the old part so I can take it to the store and show them what I need. My next problem is that I NEED to change out my fuel filter and according to my handy-dandy automotive repair manual, I am to disconnect the fuel pump switch (or inertia switch) to relieve the fuel pressure before I remove the filter. The only problem is that I can not for the life of me find that stupid switch. The book states that it is located on the passenger side cowl panel, forward of the right front door. I have looked everywhere for that stupid switch and can't find it. If you could help me I would greatly appreciate it. Yours truely, Fedup

could you please tell me where those are located on the car and how do you change them out? Is there a special tool to change them out with and how many are on the car