I have a 2009 Ford Mustang. No high beams. Replaced bulbs, headlight switch, high beam switch on the column, chked fuses, relays and wires. Still no high beams. Need help.

 

Check connections in harness feed points, ground and hot connections at headlights. imp

 

Can you hear the relay click when you turn the hi-beams on? Have someone
listen for that at fuse/relay center in the engine compartment, with the lid off.

If you hear the click, then check the power at the harnesses.

The relay is controlled by the SBJ inside the car, based on the hi-beam lever
selection.