SO .... when I got my truck the headlight high beams did not work. I looked at the dimmer and the center pin was broke off and one of the other two pins has two wires going out to the head lights and the other one wire. The headlights are on a 35 ford truck but I am not sure if they are original. the connector has 3 wires. On the driver's side the third wire is just hanging ... the same wire on the other side is grounded to the body. One question is how do you tell if the bulb is a high beam headlight bulb? The other is how they should be wired? NOTE In the drawing the light switch shows 2 tail hookups ... the one on the right should be PARK.