has it been running ok? are there any symptoms etc?
this is a common problem as ive got the same with mine (1.5dci 100) mine comes on when you accelerate hard and go over 80 on a private road and the light comes on and the power is cut like a fail safe. The norm is that the
is clogged and needs cleaning or replacing. It can also be the glow plugs. I doubt very much its the loom. If you need any help let me know