The first thing is to pull the current stereo out to check you still have the standard ISO connectors on the car as a PO (previous owner) may have "modified" it.
Normally there is a thin trim panel around the outside of the stereo that clips off (sometimes missing already), then if your good with thin bladed knives etc you can get it out by sliding them down the sides. If your not confident with that take the make/model number of the stereo and google/ebay/Halfords etc and you should be able to cheaply buy the security keys for it. Once out you can look and check it has the standard connectors, google MGTF ISO stereo connectors if your not sure and you will get plenty of pictures to compare, or you can unplug the old stereo and take it with you to the shop to compare with the new one. Alternatively you can just take some pictures of the plugs to compare and put the stereo back then you will still have music until you get the new one (knowing it will fit).
By rights you should either pull the fuse for the radio or disconnect the battery but I never bother, if you do disconnect the battery you may have to resync the fobs but I'm not sure as I have the Lucas system and yours I think is pektron.
It sounds complicated but assuming you still have the standard connectors it is just common sense and will be plug and play, I'm just trying to avoid you buying a stereo and then appealing on here "help the plugs are different"
Normally there is a thin trim panel around the outside of the stereo that clips off (sometimes missing already), then if your good with thin bladed knives etc you can get it out by sliding them down the sides. If your not confident with that take the make/model number of the stereo and google/ebay/Halfords etc and you should be able to cheaply buy the security keys for it. Once out you can look and check it has the standard connectors, google MGTF ISO stereo connectors if your not sure and you will get plenty of pictures to compare, or you can unplug the old stereo and take it with you to the shop to compare with the new one. Alternatively you can just take some pictures of the plugs to compare and put the stereo back then you will still have music until you get the new one (knowing it will fit).
By rights you should either pull the fuse for the radio or disconnect the battery but I never bother, if you do disconnect the battery you may have to resync the fobs but I'm not sure as I have the Lucas system and yours I think is pektron.
It sounds complicated but assuming you still have the standard connectors it is just common sense and will be plug and play, I'm just trying to avoid you buying a stereo and then appealing on here "help the plugs are different"