the bulbs on both sides right beside the signal light on the front of my truck are not working how do I fix them

inspect the bulbs for just being burned. access may take some observation and ingenuity noticing how they put it together. It seems one goes and then the other. The bulb enters from behind, likely has one wire and a case ground i would expect. if yours has water entry into the lamp, you can dry it and seal it ? or replace, After you inspect your bulbs and get the part number. then you can find it at the parts store or order them online. If you had no power there, the light relay could be at fault. they have used an ISO relay by hella in the past and i have seen them below the instrument panel by the fuses or up on the back of the lower instrument panel. They change things so often it is uncertain for each year exactly. Any trouble finding it and the mitchell database is free at the library, and schematics are online thru autozone for wiring.