Where do the vaccum pipes break?

Hey guys, my hubs no longer lock in and the 4wd light is flashing so im guessing one of the vaccum pipes has split, I was wondering if there was a usuall place it splits and that's all that needs replacing or do I have to replace the whole line?
Cheers
George

Hi . I had the same . It is probably the front axle pipes. Two steel pipes running along axle rotten causing the air to escape . Mega expensive from suzuki so I used rubber vacuum hose and some plastic inserts to join it all together . Never had a problem since.

Do you remind the dimension of yoour rubber vacuum hose ?

Thanks