Hello, I am wondering about ignition coils first of all. I found a picture of what it looks like, and I think I have 3 of them in my car. Do I need to order 3 coils? Or am I looking at the wrong thing?

Another question. Where are the spark plugs located, and are the spark plug wires connected to the plugs? Are they the plugs that look like a sideways sterio jack? Is it difficult to change the wires? Well Thanks for listening to me.

Jason