Well there are no fuses for our lights, they are controlled by a highside driver from the TIPM. Get a test light & flip the TIPM over & check the C3 connector ( it's green ) & check pin 3 ( white wire/ dark blue tracer ) for power. Thats your left low beam. If theres no power when turned on, more then likely the TIPM has an issue or the multifunction switch. Does your high beam indicator come on in the cluster? If it does, that usually means the switch is workign right. Hope that helps ya.