After market install 01 ford escort zx2?

I have an 01 ford escort zx2 that has an after market stereo system. This vehicle is fairly new to me but for some reason the stereo doesn't have power. I have checked fuses and all the normal things. Upon further research I have found that the ground wire is not connected and I'm not sure if it can be soldered or if it needs to be replaced completely. Any insight would be very helpful.After market install 01 ford escort zx2

Is this a good car deal? 97 Ford Escort Lx?

She said person she bought from in 2011 said a another engine was put in it. She says it's nothing wrong it rides well inside and out looks clean http://chicago.craigslist.org/wcl/cto/4449895483.html
Ad says 97 Ford Escort LX, high mileage 240k, 4 cylinder, auto trans, power steering and power brakes. New tires, brake pads, timing belt and ball joints. Reliable daily transportation.

My car is shaking. What do I fix or replace?

The front end of my car has been shaking and vibrating like crazy. It is a 1995 Ford Escort Hatchback. I checked and replaced the outer tie rod ends and checked my brake rotors for warping. My rims aren't bent at all and there's no play in my steering. I hit 25 mph and the front of my car feels like its going to shake apart. The passenger side on the front of my car feels very soft and bounces more than once when I push down on it and let go. What could it possibly be? I do all the work on my own cars so I'm capable to do most tasks, I'm just looking for someone to point me to the right direction so I don't waste my time or money.

98 Ford Escort Timing belt?

Alright my escort zx2 is in the shop for the third time in a week. (definitely glad I have a warranty) The timing belt has shredded each time. The first time, apparently the tentioner was only half there. Second time, apparently it was defective belt. I guess I can accept those two. But this is not even a week later (not even a day later) to have the belt fixed again. I have been told by everyone I'm very lucky to have no engine damage thus far.
any idea what it could be? Could there be another underlying problem?

Grinding/popping sound from front left?

There's a grinding/popping sound on a 2001 Ford ZX2… It does it sometimes even when you aren't turning the wheel, but seems to be really prominent when you turn the wheel. As time has passed, this has gotten even louder. It is being taken to yet another garage today to be serviced. A trusted garage of years… Failed to find anything. The noise mysterious "disappeared" after we had them take a look at it and he mentioned that he "twist-tied" some part that was flopping around. However, that wasn't it. It stopped for a very short time and is now much louder. It is a grinding sound as if something is scraping on something else when turning… Sort of a metal on metal sound.

The ball joints were replaced about a year ago. The tie rod ends were also replaced. Shocks/struts (not sure which one it needs on the front) were checked (or so they claimed) at the first garage… And he said it needed them. But he also said that the only thing that it hurts is it makes for a more bumpy ride. CV boots were checked for cracks and I even managed to take photos of them myself, just to make sure… They look fine. However, I'm still wondering about the CV axle(s) and another garage is going to take a look today. This was a northern car originally and spent a while in Michigan (has a lot of underside rust, etc, from the heavy salt used up there).

Added (1). I'm quite puzzled as to what this is. It started right after they were paving our road and our car bumped down (due to the road not being as high and it was about a half of a foot drop) and something "popped" coming out of our driveway. The grinding noise seems to be coming from the left front.

1997 Ford Escort Wgn AC now doesn't work?

Had a new engine and trans put in a few months ago and I think the AC worked when the mechanic brought it back to me - his wife and I drove it around for awhile but don't remember if we ever used the AC - yesterday I tried to use the AC and only hot air comes out no matter where I put the switches. Any ideas on where to see if it has freon or needs coolant? If a fuse went bad would it work at all? Or something else?
I don't drive it much so the last time I drove it only needed to use the heat. (have two cars)