transit connect handbrake light came on?

Few weeks ago i probed up a wire in the nsr lamp cluster which kicked in the abs warnin light someone said i may of coocked the abs module,
took it 2 my mate who works in fords he pluged it in and it said it needs a sensor so i done the osr sensor but light still on

Another garage replaced the nsf drive shaft complete and the brake fluid and the gear oil now the hand brake light is on they pluged it in 2 there computa n it said the nsf sensor was at fault so again replaced it but guess wot the handbrake light is still on now there telling me its a connected fault to the abs light being on is this right or they trying there luck wiv me