Puma Reverse Switch Head Scratcher?!

[Tikka7mm08]

My reverse lights became intermittent so I bought a new switch for the passenger side of the gearbox. Fitted it and still no lights.

Took the plug off and bridged it and lights went great. Read on here someone removed the switch o-ring so it could be a fraction tightened more and that worked for them. Tried that, no joy. Removed switch and put plug and depressed the ball bearing - lights work great.

So it seems my switch isn’t sitting deep enough in the box to be activate? My gearbox is a refurbed Ashcroft supplied one so should be all good - and the previous switch was working until it went random then not at all.

Photo is of new part number for switch. I’m left looking at comparing the old one and taking its o-ring off and hopefully it sits a little deeper. Can’t think of what else I can try.

https://uploads.tapatalk-cdn.com/20250109/e9409d1a95b5395823e5d309882c720c.jpg

[spudfan]

I have had this issue. Removing the "O" ring helped on one occasion. Last year the reverse switch, with the "O" ring removed needed replacing. So a new one was ordered, "O" removed and it was duly fitted. No go, did not work. A different brand was ordered, "O" RING removed, fitted...and it worked. Seems some switches are made slightly longer.
Unfortunately I do not know the brand of the one that worked.

[Tikka7mm08]

The other thing I forgot to say is that I added a TMD short shifter.

[Tikka7mm08]

SOLVED: tried the old one without the o-ring, finger tight and the reverse lights are going...put some gasket maker silicone around the base and tightened up. It's not so much switches are different length but the internals of the switch themselves for activating...classic Land Rover run around to end up where I almost started - same switch, just remove o-ring [bighmmm]

[DazzaTD5]

when i do a rebuilt gearbox I fit a new genuine switch lr077773 so i dont have these issues.
Same deal with a transfer case, always fit a new diff lock switch and alloy washer.