When I had an A500 upgraded with an extra 256k of RAM, the RAM upgrade had an enable/disable switch. The switch was on the end of a wire which trailed out of the trapdoor (the wire was very thin so the trapdoor still closed). The switch had a small self-adhesive pad which was used to stick it to the back of the A500. You could do exactly the same with your switch to avoid vandalising your nice clean A500 :-)
--
moto
