Yeah, bit of a saga this was...
So originally I went for an aftermarket switch from SNG Barratt. Took my old one off and it was clearly past it. When I took it off the back of full of fluid. You can't see it in the photo but it was literally full:
Was on properly tight, no way I could undo it on the car so off came the whole thing. If you think it's fiddly getting it off, just wait until you try putting it back together... Had to take off the liner from the bottom of the spoiler to be able to get my arms/spanners in to undo it all and of course all the fastners were rusted.
Whilst it was out I gave the holder a bit of a clean up and paint although I found they're still available new for less than £1 if anyone needs one
The best way I found to get it all back together was to hold the accumulator sphere with an axle stand to keep the whole thing in place freeing up your hands to be able to screw in the pipe at the top.
Here's the only picture I took before getting it all back together:
Anyway, after wrestling it back together I fired her up and no brake pressure. Hmmmm. It then occured to me that I'd replaced the wrong switch
At this point I was pretty frustrated to say the least. Even worse was coming back the next day to find a huge puddle of the green stuff underneath. Grrrr. Anyway, I've been so busy at work and the car was stranded on a mates drive I decided to take it to a nearby garage who I know are 'classic car friendly'. Was an experience driving there with no brake pressure but no harm done. Anyway, they refused to work on it. Pretty sure they were scared by the complexity!
Although they did recommend a jag indy specialist who was literally a 2 minute drive away so I took the car around there. When I turned up the guy had amongst other things a track prepped xj40! Which apparently weighed 1350kg!!
So I was pretty confident the guy knew his stuff. But yeah, long story short, he replaced both switches with genuine items for £300 including labour so pretty pleased with that given each switch is £250 + VAT at JCP. Brakes feel so much better now but not convinced 100% right. Got to love these old cars