Fatrover
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- Argyll, Scotland
Brake light circuit
- Thread starter Fatrover
- Start date
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- 33,600
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- North Shropshire
There's a brake light switch on the pedal, that's all
Fatrover
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- 914
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- Argyll, Scotland
I’ve replaced that….(mine is non servo)
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- 33,600
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- North Shropshire
Sorry i misread.. the switch could be a pressure one in the brake pipe, on the chassis, right hand side
The bit in your pic
The bit in your pic
Fatrover
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- 914
- Location
- Argyll, Scotland
That’s the bit I mean, the switch on the brake pipe, would that be part of the brake light circuit? Looks to me like it’s wired into the same fuse as the brake switch behind the pedal. Am wondering if it’s stuck
I think you will find that particular unit is the brake failure warning switch, the idea being if one circuit fails the internal shuttle moves to one side so you still have half the brakes working and the shuttle moving activates the warning switch, old school stuff and not seen one for ages.
So in answer to your question, no it should not effect brake lights.
Where exactly is your brake switch located?
What model of series is it?
Fatrover
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- 914
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- Argyll, Scotland
It’s a 76 series 3, brake switch behind brake pedal, no servo. I can see that the failure switch is wired to a wee lamp on the dash, so that would make sense!
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- 33,600
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Ah yes, series 3, that will be the failure switch.
The brake switch is on top of the master cylinder
The brake switch is on top of the master cylinder
Fatrover
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- 914
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- Argyll, Scotland
Mine is non servo so only switch is behind da pedal. Can’t understand how there’s not voltage at the wires attaching to the pedal switch. Stumped
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- 33,600
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The power to the brake switch shares the same fuse as the gauges and warning lights. If they are working then you must have a broken wire or bad connection
Fatrover
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- 914
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- Argyll, Scotland
Guages etc ok, similarly, am wondering if there’s a bad connection where the power wires for the brake switch are connected into the main feed from the battery……
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- 33,600
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- North Shropshire
- Posts
- 33,600
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- North Shropshire
So long as it's fused
Wheres the excitement in that!
Fatrover
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- 914
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- Argyll, Scotland
Will try a few terminals and see!
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- 33,600
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- North Shropshire
Tightly coil the wire around the accelerator linkage for a couple of inches then, so it doesn't get caught up on anything
Fatrover
Well-Known Member
- Posts
- 914
- Location
- Argyll, Scotland
Right. Power restored at brake pedal switch, problem was in the fuse box, a combo of a **** ton of Sahara dust I hadn’t removed and fuse pin terminhale a bit wide making an intermittent contact. Switch at pedal operates circuit when activated, so that’s fine, but no power at the brake lights, so must be a bad wire between pedal switch and light. Will sort when back from hols! Along with a new fuse box…..hopefully should be reasonably straightforward
I was more thinking exhaust downpipe, the extaraheat might just increase the gas flow, so you can drive faster to escape the fireTightly coil the wire around the accelerator linkage for a couple of inches then, so it doesn't get caught up on anything
Chassis loom offside rear where it comes out of the chassis.
