I think 1966 mustang halogen headlights shall be h4 bulb.

In this time, I will show you our 1966 mustang halogen headlights in brief.

Our 1966 mustang halogen headlights h4 using “anti-uv quartz glass”.

Those 1966 mustang halogen headlights are high-low beam together.

At recent years, 1966 mustang halogen headlights can be replaced by LED.

In order to make you clearly our 1966 mustang halogen headlights, I will show you picture as below.

Any things confusing you about 1966 mustang halogen headlights, please inform me without any delay.