What is wrong when headlights work on a 65 mustang?

The 1965 Mustang's headlight switch is prone to failure. The most common problem is that the switch will not turn on the headlights, but sometimes the headlights will come on and not turn off. This is because the switch is a rotary switch, and the contacts inside the switch can become worn or damaged over time. When this happens, the switch will not be able to make a good electrical connection, and the headlights will not work properly.

If your 1965 Mustang's headlights are not working, the first thing you should do is check the headlight switch. If the switch is damaged or worn, you will need to replace it. You can find replacement headlight switches online or at your local auto parts store.

Here are some tips for replacing the headlight switch in a 1965 Mustang:

1. Disconnect the negative battery cable. This will prevent you from getting shocked while you are working on the electrical system.

2. Remove the headlight switch bezel. The bezel is the plastic trim piece that surrounds the headlight switch. You can remove the bezel by prying it off with a flat-head screwdriver.

3. Remove the headlight switch. The headlight switch is held in place by two screws. Remove the screws and pull the switch out of the dashboard.

4. Disconnect the electrical connector from the headlight switch. The electrical connector is a small plastic plug that connects the switch to the electrical system. Press the release tab on the connector and pull it apart.

5. Install the new headlight switch. Insert the new switch into the dashboard and secure it with the two screws.

6. Reconnect the electrical connector to the headlight switch. Press the connector together until it clicks into place.

7. Replace the headlight switch bezel. Snap the bezel back into place.

8. Reconnect the negative battery cable.

Once you have replaced the headlight switch, you should test the headlights to make sure they are working properly. Turn on the headlights and make sure that both headlights are working. If the headlights are not working, you may need to check the headlight bulbs or the headlight wiring.