Making room for wire nuts for a fixture screwed onto a conduit

Question

I am replacing a line-voltage outdoor lamp. The old lamp was screwed directly onto a length of 1/2" metal conduit coming up from the ground. Whoever put this together originally just twisted the wires together and taped them, and shoved the results down into the conduit. There is no space inside either the new or old fixture to put wire nuts. I seem to think that I've seen fixtures atop conduit along paths before, but of course my visual memory is not perfect. The alternative that occurs to me is to add a box (or perhaps just a conduit body) atop the conduit to make a place to put proper wire nuts.

Alternatively, one might be able to persuade wire nuts for #14 wire to fit into the conduit by putting them down there one-at-a-time. What's a good practice that conforms to code here?

You can see the new fixture https://www.build.com/kichler-15205/s869822?uid=2221476&null.

The old fixture is not materially different.

Answer 1

According to the information at the linked page:

Compatible Accessories:

For stem mounting, purchase the 15645, 15656, 15657, or 15658 stems and the 15276 power post
^{Emphasis added}

The 15276 power post says (among other things):

Features:

• 2 1/4" inside diameter accepts conduit of different sizes
• Made of impact and corrosion resistant PVC, suitable for wet locations
• Eliminates the need for above-ground power source or junction boxes
  ^{Emphasis added}

This power post, at 2.25" diameter, will provide the room for the wiring necessary to make the light work.

To go along with your $200 yard light, you need a $34 "junction box" to mount it.

Answer 2

lamps that connect to conduit usually include an internal junction box. use that.