I've been looking for a reversing light switch for my remote change gearbox and today I found a mini at the wreakers with one on it.
I eventually managed to get it off and now I have a switch and a spring but did I miss something as I don't see how these two parts by themselves will work.

Simple- when you select reverse, the lockout plunger comes up, and closes the switch..

The spring is just the lockout for reverse. I put a nice `red die spring' in there instead, so it's harder to get the reverse gate by mistake- when you really wanted 3rd gear.. ..

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Thanks for that.I didn't want to have to go back as with the front end the way it was it wasn't easy to get to.

I put the switch on and it didn't work.I've ended up having to add a small length of 5mm steel rod into the spring and now it works perfectly.