Its only one wire from weel to wheelThere are likely to be 3 cables for handbrake.
1 cable from hand brake lever by driver to an L shaped lever under van
Then 2 more cables from L shaped lever to rear wheels.
The say its a 244 chassieFirst determine if it is a X244, X250 or X290 on a web site like........
Fiat Ducato - Wikipedia
en.wikipedia.org
Then try ebay.
Its one from The handle to The underside then its connect to some kind of link and from link to a Rod that go to The back of van and then The Rod is connect to a singel wire The go from whewl to weel that The wire is approx 3300 mmIts only one wire from weel to wheel
Fiat part number 1339676080 for rear disc brakesDo somewone do brakecabels by order or by intruktions