Hi Cynthia,
There have been observations of aurora on Uranus and Neptune
See here for some pictures of aurora on Uranus:
https://www.nasa.gov/imag...ts-auroras-on-uranus They are in a funny place - not at all near the rotational poles of the planet because Uranus's magnetic poles are close to the planet's equator than its poles.
Neptune also has aurora, observed by Voyager-2, but they seem to be relatively faint.
Terry