'90 Legend LS Coupe - tail lights not working

My tail lights (both sides) aren't working my 1990 Legend Coupe. The fuse is fine, the bulbs are fine. Someone suggested the DRL relay??
Can I replace that myself? Any other ideas?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.