Outer Limits 4x4 Board

My low beam in the headlights died yesterday. Im not real good with electrics. The headlights have a narva wiring loom upgrade installed in them so there is only one bulb in the headlight that does both high and low beams. The high beam works but the low doesnt so it cant be the bulb. Anyone have any suggestions?

still could be the bulb as the bulb will have dual filaments. one for high and one low.

Are they fused separatly for high and low?

use a multimeter or another globe and see if there is any volts down at the plug.

take globe out and test with some wire direct onto the batt.