Hi all ..   Followed the excellent instructions on this guide as my brake light switch needed replacing but for some reason the replacement part I fitted had the strange effect of making my brake lights stay on all the time ??  It was a new switch, purchased from Euro Car Parts ... the plunger had 'self-adjusted' but the second I plugged the wiring loom back in, the brake lights lit up and wouldn't go out :(  I'm guessing it was perhaps a faulty switch / has anyone else had the same problem ?