high beam switch
Usually you just pull back on the turn signal lever.
On classic mustangs, it's a round looking switch mounted on the floor near the kick panel. You step on it to activate and deactivate it.
Old Mustangs ( pre 1979) usually have the switch on the floor , to the left of the brake pedal. You press it with your foot , one click on ,and one more click for off. The top of it is round and about the size of a Quarter. Newer Mustangs have the switch built into the turn signal lever . Pull the lever gently back towards you until it clicks , and one more time to turn it off hi-beam . Some models might have you do the opposite ( push lever until it locks forward and pull back to put it back to normal lights ) You might need to read an owners manual , or go to the dealership and ask for assistance , if you feel you might break something.
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