k14: Is this the sticker with the wires inside of it that is stuck to the windscreen up by the sun visors? If so I have the same on my car. I think they were the TV aerials maybe? I'd be keen to get rid of them too.

I also have three other sensors stuck to my dash board and a card reader below glove box. Pretty sure they are for toll roads? Too scared to cut the cables and rip them out in case they are hooked into something else!

Yes up by the sun visor. Also had a GPS antenna on the dash and etoll sensor near the rear view mirror. Those came off relatively easily.

I've removed as much wiring as I could, had to cut a few wires but I was confident they weren't connected to anything.

Should've kept the toll sensor for Auckland roads in 2 years or so...! ;-)