Re: [Classic Mustang] Light trouble

That is what I am thinking too. I don't have a schematic - but I recall
that the interior lights were driven from the headlight switch. It has
two breakers built within - brake light and head light circuits. But it
also feeds other things... like dash lights (which also derive off the
brake light circuit).

-Michael

Curtis Desaulos wrote:
> Bad Headlight switch
>
> Curtis in Houston
> Whole corral of Mustangs
> 64.5 Coupe
> 73 Mach I 351-2v
> 73 Convertible 351-2v
> 73 CJ Mach I 351-4v
> 93 LX Hatch - 306 road racer
> 95 GT - pleasure car
>
> ________________________________
>
> From: classicmustang@yahoogroups.com on behalf of JOE OLIVER
> Sent: Mon 3/2/2009 10:26 PM
> To: classicmustang@yahoogroups.com
> Subject: Re: [Classic Mustang] Light trouble
>
>
>
> The back up lights work as does the horn. I will check the turn signal switch to see if I can find 12 volts coming into the switch. I believe the horn gets the 12 volts from the switch. Actually the emergency flasher gets 12 volts from the turn signal switch and it works.
> joe
>
>
> ________________________________
>
> From: "Flick01@Aol.Com" <Flick01@Aol.Com>
> To: classicmustang@yahoogroups.com
> Sent: Monday, March 2, 2009 3:50:10 PM
> Subject: Re: [Classic Mustang] Light trouble
>
>
>
> Joe,
> I mentioned in an earlier post a lot of stuff goes through the turn signal switch. The horn may get it's power from the headlight switch as it uses the circuit breaker in the switch for protection but the brake lights and turn signal should get the power from another source. See if you can find where power for the turn signals is supposed to enter the switch. I'm only guessing but your problem could be a bad turn signal switch. Check to make sure the brake lights are working as they also run through the switch. As I mentioned before I do not have a diagram handy so I'm throwing out guesses. If you have 12 volts coming in for the horn, and another 12 volts coming in for the switch, and only the horn (or nothing) is working, you may have a bad switch.
>
>
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