It’s not the fuses and I’ve changed the bulbs I haven’t found any loose wires either only a plug with nothing connected by the fuel switch. The only wire connected to it is a ground wire(black and yellow) I need help!

 

Do you have a VOM meter?
1. start at the fuses for the headlight, check for voltage on the + and continuity on the -.

 

go to the key switch and start looking. check that the fuses are good and there is power to the key. thats the only place where the headlight & tail light circuits come together so if you have power to the key switch the problem is inside

you'll need a diagram and a meter

 

Meter is your friend...