All my windows and door and power seat stopped working. Checked the fuses all are good. The mechanic took the door off and when tested there is no power at all. They did not know what to do after that because their not good with electrical. I have the one window down and the weather is getting colder. My seat is stuck down and back. Any suggestions. Could it be a relay? If so where is that located. My information under all the panel boxes are worn off.