The Ford Barn

Cornishman · 06-23-2016, 01:32 AM

I have a 31 Sports Coupe with two bulb headlamps. I drove my car outside yesterday, stopped it and with my son's help looked at making sense of the lights. At that point; the horn worked, the stop lamps worked and the headlights would light in one position and the parking lights in another. The rear lights weren't working. Having seen the headlamps work I went to see if I could 'feel' the switch engaging in the position that wasn't working. At that point everything electrical stopped working except the starter. The engine cranks over well but the horn and lights have stopped working and there is no spark at the plugs or when the contact breaker is opened. All this is more confusing as there is over 6.5 volts everywhere there should be. That makes me think it's an earthing problem. Am I correct? For example the horn receives power but does not work when the button is pressed.
Can anyone think of a fault that stops the lighting circuit and the ignition working even though they have power?
If the starter wasn't working so efficiently I would think it was the earth terminal from the battery that was at fault.
I have followed troubleshooting guides for the ignition but can't believe that its failure is unrelated to the lights and horn.

06-23-2016, 01:32 AM	#1
Cornishman Senior Member Join Date: May 2016 Location: Le Ravary, France Posts: 241	Link between horn and lights not working and no spark. I have a 31 Sports Coupe with two bulb headlamps. I drove my car outside yesterday, stopped it and with my son's help looked at making sense of the lights. At that point; the horn worked, the stop lamps worked and the headlights would light in one position and the parking lights in another. The rear lights weren't working. Having seen the headlamps work I went to see if I could 'feel' the switch engaging in the position that wasn't working. At that point everything electrical stopped working except the starter. The engine cranks over well but the horn and lights have stopped working and there is no spark at the plugs or when the contact breaker is opened. All this is more confusing as there is over 6.5 volts everywhere there should be. That makes me think it's an earthing problem. Am I correct? For example the horn receives power but does not work when the button is pressed. Can anyone think of a fault that stops the lighting circuit and the ignition working even though they have power? If the starter wasn't working so efficiently I would think it was the earth terminal from the battery that was at fault. I have followed troubleshooting guides for the ignition but can't believe that its failure is unrelated to the lights and horn.