Brake lights always on my 1985 T25

[jakestroudley]

I have a RHD 1985 T25 and the brake lights are staying on full time. I have read a post to see what the issue is, and I think I understand that the switch which is causing the problem is located behind the instrument panel.
My question is, how do I get to it to replace it or do whatever I need to do to it? Is it a big job or is it something I could handle?
Any advice or step by step guide to the fix?
Any useful responce gratefully appreciated

[The Hairy Camper]

What switch are you intending on removing? Headlamp switch? I've not heard of this issue before, but removal of the dash is a simple job.

[silverbullet]

The brake light switch is screwed into the master cylinder and is a wet switch, sonwill require the brakes to be bled afterwards. Potentially messy job.
I'd check behind the instrument pack to see if there is potential for a short to earth, it appears to be a parallel double pole switch which gives redundancy in the event of one switch failing.

[jakestroudley]

Thank you for the responses, here's a weird thing, the lights have gone off over night. Battery is full because it's on a drip charger, van starts fine. Im going to get a friend to press the brake pedal while I watch the lights. If the y stay on again and turn off later on, has anyone any idea on that?
Bemused.
Something to do with the heat? And turning off in the (slightly) cooler night???
Thanks

[silverbullet]

Could be a symptom of residual brake system pressure, which would indicate a seized brake piston in a caliper.

[mickcorr]

In response to your question regarding the brake lights suddenly behaving themselves all I can say is that I experienced that as well. All was fine for a while and then the problem of sticking brake lights re-appeared.
For the sake of a few quid I just changed out the brake switch (as explained above). It wasn't that messy but I did have to bleed the brake system before the new switch would activate. No further problems since.