Headlight relay?

Under the hood on the driver side! Upnear the wiper pump you will see a second fuse box open it with aflat head screwdriver be careful not to break the plastic tabs theiris a diagram inside to show witch on to replace it is square andmetal looks like a relay but it is called an enclosed fuse when youask for a replacement! Most truck stops do not carry fuses but, mostCB shops will! At loves, Pilot/Flying J you have to go to the roadrescue guy to get one! If, not Call Napa!

 

Check the connector where you plug the light bulb usually it goes bad from vibration and heat from the bulb.Its a rubber part that melts and the bulb is loose not connected properly.Fuses are under the dash by the extra cup holders i'm pretty sure you know this already and on the back side of the panel is the list of fuses and relays locations

 

START WITH LCM (MID 216) FAULT CODE TRACING.

there is no light relays in this truck

 

Are there fuses for the headlights?