Won’t start because the brake lights don’t work

[Bobton125]

I have a PGO 250 road legal buggy
My brake lights won’t turn on when I push the pedal and because of that, it doesn’t start (as it needs the brakes to be pressed for it to turn on like some some bikes/scooters)
I‘ve replaced the switch circled below on the master cylinder, But still does the same thing.
If I put a screwdriver across both terminals of this brake light switch then the lights do work and it does start.

Any ideas what the first things to look at here would be? As I’m very lost
Thanks

[Bobton125]

I replaced the switch with a new one

I didn’t think there was a need to bleed the brakes? I syringed Out what was in the reservoir, replaced the switch and then topped it up again

[Bobton125]

paintman said:

Bleed the system then try again.

How did you get on with the cable?

I gave speedycables a call and have sent it over to them to replace the inner one

Should all be good hopefully

[Bobton125]

Fluid does come out when the switch is unscrewed

As it’s not working with the new switch and with the system being bled, I am now considering fitting a mechanical brake light switch instead of a pressure switch