Hi, just fitted a new steering rack to our 1.9SDI Fabia (with surprising ease!) but for whatever reason now its all back together the horn has stopped working? We've checked to see that we haven't dislodged any wires and there's no obvious problem, fuses look ok - any ideas? Thanks

I'd check to see the horn push itself is working, and power is reaching the horn terminals.

Just to check, you have the ignition key in the run position when you're testing the horn?