If I read it correctly that's for windshield installation. Way overkill and I bet ....messy.
I bought a used take off light and it definitely had black foam tape.
------ Follow up post added July 7th, 2012 09:52 PM ------
I've used lots of 3m 5200 and it's for bonding panels together. I used it to bond my fly casting deck on my flats boat. Worked perfectly but definitely not for this install.
It is great stuff to have around...for example to seal the outer seams on the defender roof....white not the black.
------ Follow up post added July 7th, 2012 09:58 PM ------
If you don't like the regular 3m trim tape this is the commercial version.
They only sell it in big rolls but this guy on eBay sells 5 pieces of 4" squares for cheap.
It's The VHB variant. very high bond.
That should definitely hold our little light.
Hope it helps.