I'm an owner of an Opel Vectra C Saloon(4
doors) from 2004 with an 2.0 DTI engine.

Currently I'm trying to replace the original antenna with a shark tail one.

I looked on the how to section and found this tutorial

Sadly I have an saloon model so I'm unable to access the back of the roof that easily. I think that I need to take the whole roof down in order to remove the old antenna, mount the new one and connect the cables .

So I'm asking anyone how has an Vectra C Saloon car and has removed the roof or done ever anything like I'm attending to do to post some indication, steps, pictures on how to do this.

Best regards,