If it's a regular banjo bolt pressure switch like this then the act of unscrewing will mean you'll have to rebleed the system. Did mine recently in about 30mins so too bad, just take your time. Although granted if your MOT isn't for a while then not mega urgent.
So, earlier than I was hoping, but need a little advise on maintenance!
I’m hoping this is as small a job as I think it is. I’ve noticed the rear brake is not actuating the light (but front brake is)
I’ve isolated the issue (worn cable) and found a replacement.
Now all I need to know is, will I need to bleed the brake (I hope not), or is it just unscrew and screw back in?
I can get some better photos without that plate on tomorrow.