Easy to install as long as you pay attention.
Used this flasher module, $15
Used a Posi-Tap for the ground wire, and ultimately used 2 crimp caps for the power wire and electrical tape to wrap them.
Get access to your wiring........... the trim panel just pops out with a pull.

This is the wire you'll tap for the flasher module.

Cut the red power wire.... I ended up cutting it too high on the wire and it made it difficult to connect the flasher module. I don't know why I thought it would be a good idea to cut so high but I should have done it much lower near the plug.


Connect the flasher module according to the instructions...

Done!
The module has two flash modes which they say are better for LED or incandescent bulbs... I tried both and these are the flash patterns. I liked the pattern better that was for incandescent bulbs, even though our Tucson's are LED. I feel the LED flashing pattern is too fast.