If you're doing maintenance on a Nissan Primera and you need to get inside the door, whether you're working on speakers or on the wiring for the mirrors, it's a fairly easy thing to do. However, it never hurts to know a few simple tips and tricks.
It always helps to have the right tools for the job, regardless of your project; however, some tools will make taking the door lining out much easier. You should have small sockets and a socket wrench, which makes it easier to reach enclosed or hard-to-reach nuts. Additionally, you should have a regular screwdriver on hand to help you pry out the covers on the door so you can access the hardware to remove the outside.
The Nissan Primera's door is filled with all sorts of electrical wiring, including the wiring that goes to the windows, switches, speakers and mirrors. It is easiest to get the job of removing the insulation done if you can disconnect as much of the wiring as you can. Working around it could lead to tangles and problems with access.
Cutting the Insulation
If you have no intention of reusing the insulation that you're removing from the Nissan's door, then you might find it easier to simply cut or tear it out. If the entire insulation isn't necessary, take it out piece by piece and put it in a bag to recycle.
It's helpful to have an extra set of hands when you're working on this project, especially when you're removing wiring and trying to pop the door cover off the inside. Having an extra set of fingers prying and tugging provides an even grip and applies more pressure.