So I have a stubborn traffic light at the intersection that leads to my house, it's extremely annoying to deal with everyday. I've read that a Neodymium magnet can produce a high enough magnetic field to make even the most stubborn lights change. I've seen products for sell like Green Light Trigger, now I can buy a magnet off eBay, among other places, at much cheaper prices. So I'm wondering, what power Neo magnet would I need and about how large? I believe the powers range from N24 to N54.
Also, these magnets do not hold up well under heat (anything over 175F/ 80C), so I've read. Do you think it would hold up if I stuck it on the inside of my engine bay (on the frame)?
Thanks.