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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 04-08-2011, 09:40 PM
TEXFARLEY TEXFARLEY is offline
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Brake Lights: Switch, Wiring: HELP!!!

1995 f250 with the brake lights on at all times.
Replaced turn switch, no help. Doesn't appear to be turn or hazard flasher.
However, I have 12V on both sides of the Brake Switch. Is this normal? Can't tell from wiring diagram.
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Old 04-08-2011, 09:42 PM
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Do you have a third brake light on that truck? Is it on? That would be wired direct from brake light switch, not through multi-function switch. But... have you checked the actual brake light switch? It sounds to me like its bad. There would only be 12 volts on both sides if its closed creating a circuit....
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Old 04-08-2011, 09:47 PM
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Have a third light, but it's always off, as are the "courtesy" lights on the top rear of the cab.
12V on both sides at brake switch connector, with switch disconnected.
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Old 04-08-2011, 10:30 PM
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Id be pulling bulbs and checking voltages. Wire schematics to find out whats going on. Now I am curious.
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Old 04-08-2011, 11:18 PM
TEXFARLEY TEXFARLEY is offline
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Yep, one of those Saturdays. I'll let you know what I find
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Old 04-09-2011, 10:24 PM
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Something in dome circuit is shorting to GND, pulling up GND on rear, cargo assemblies.
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Old 04-09-2011, 10:24 PM
 
 
 
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1966, 1995, 2009, 350, brake, bronco, diagram, f150, ford, jump, lights, multifunction, switch, truck, van, wiring

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