Javier,
A couple of questions for you. Has the wire split or frayed, or did it get detached from the hardware?
If detatched, is it from the handle in the door post, or from the release mechanism in the trunk?
Let us know so we can figure out what type of picture to look for. I *might* have some of the handle in the doorpost (can't take any right now because the car is with Daron in WA), but I'm not sure if I have anything else.
A.

 

The wire get detached from the handle in the door post ...

Thanks for your help

 

Javier,
I looked through the photos I have from disassembling my car, but I can't find any of the trunk release, so I'm going by memory.
First, detach the handle from the bodywork by removing the screw under the handle. The only way to access wire on the inside is by removing the trim panel on the inside. When the handle is free, you should see that the wire is formed into a loop and attaches to the handle with a bolt, threaded through the release mechanism.
Perhaps someone on the board has an illustration from the service manual. I'm sorry I don't have any photos that are helpful.
Antoni

 

Bolt at 1 goes through cable loop.
Cable is fed through small hole and comes out at 2.
cable cover is held in place with screw at 2 (don't tighten the screw at "2" to much as it will act as a brake on the cable)

 

exit19 - A picture really is worth a thousand words! Much clearer than my description (and memory) could describe it.

 

Hola Javier, para llegar al cable deberás quitar el panel de tapizado lateral y verás que la manilla va cogida con una chapa en forma de U y una tuerca de 8mm, para abrir el maletero simplemente coge unos alicates de presión y estira con ganas del cable, necesitarás otra persona que abra la tapa del maletero mientras el otro estira del cable, suerte!!

Hello Javier, to reach the cable must remove the side trim panel and you'll see that the handle is caught with a U-shaped plate and a 8mm nut, to open the trunk just take pliers pressure and stretched with wire rack, will need another person to open the trunk lid while the other stretches the cable, good luck

 

Thanks a lot for your help! ... great photos exit19 ... and great explanation quadrifolio ... I will try this weekend ... seems easier than expected ... ...

 

Not so sure if it is also true for a Bertone, but a Berlina 2000 has a hidden spare cable with attaching plastic rings laying on the left side somewhere in the under glove box