“4.) rear defroster only defrost 1 line in the rear window. “
This comment tells me that your rear defroster is working but what has probably happened is something scraped across the conducting grid/s causing a break in the circuit (open circuit). Take a really good look at the grids on the window and see if you can see where it is scratched through. If you can find where it is scratched someone (I believe it is Permatex) makes kit that is basically a tiny jar of copper conductive paint with a brush and a cardboard stencil with to make lines (like the lines on the defroster grid). You essentially paint on and restore (close) the circuit. I bought some several months ago from a privately owned auto parts store as when I explained it to the AutoZone and Kragen folks they just scratched their heads. Meaning you might have to look around for it a little. I no longer have the card/bubble pack it came in but I am 90% sure it was made by Permatex.
I believe it cost aroud $8.
I did a search=
Permatex 15067 Quick Grid Rear Window Defogger Repair Kit
To view the pic: http://www.amazon.com/Permatex-15067-Window-Defogger-Repair/dp/B000HBI9YQ