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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Apr 2010
Posts: 463
Learner Plates Off!
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OP
Learner Plates Off!
Joined: Apr 2010
Posts: 463 |
My brake lights stay on intermittently, I give the switch a gentle tap then light goes out.
Does anyone have a part # please?
I believe these switches aren’t very reliable, as an alternative has anyone tried mounting a micro switch off the brake pedal?
Dave
98 +8 Corsa Red
74 MGB Red
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Joined: Jul 2007
Posts: 27,840 Likes: 764
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,840 Likes: 764 |
The alternative is a relay to keep the higher power off the switch. I think they area BL part. Details here on the part number etc Brakes
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Nov 2006
Posts: 932 Likes: 47
Talk Morgan Regular
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Talk Morgan Regular
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Joined: Dec 2008
Posts: 22,371 Likes: 354
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
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My brake lights stay on intermittently, I give the switch a gentle tap then light goes out.
Does anyone have a part # please?
I believe these switches aren’t very reliable, as an alternative has anyone tried mounting a micro switch off the brake pedal? I put a microswitch on my brake pedal in 2009 (I think) Dave and it's been totally reliable. I'll see if I can find the post. Sadly that post was consumed by the debacle around Photobucket. But I mounted a relay on the crosshead, near the switch, which on my Roadster is offside chassis mounted. The microswitch came from Maplins and I mounted that to a simple fabricated L bracket. The mini-loom was piggy backed onto the existing switch terminals, so nothing was changed, allowing reversion to standard if necessary. The wires run through the bulkhead using the existing loom hole. Don't bother sourcing a new hydraulic switch, because the quality is such that it will fail again at some point. Retrieved image of piggy back on switch..................... ![[Linked Image]](https://www.tm-img.com/images/2017/11/28/IMG_3101.jpg) Retrieved image of relay mounting.................. ![[Linked Image]](https://www.tm-img.com/images/2017/12/18/IMG_1729.jpg)
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Dec 2009
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Tricky Dicky Member of the Inner Circle
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Tricky Dicky Member of the Inner Circle
Joined: Dec 2009
Posts: 37,485 Likes: 989 |
My brake lights stay on intermittently, I give the switch a gentle tap then light goes out.
Does anyone have a part # please?
I believe these switches aren’t very reliable, as an alternative has anyone tried mounting a micro switch off the brake pedal? Here is the part you requested Dave. Slaving a relay will remove the current factor from the hydraulic switch as John suggests, this makes them far less prone to failure. I have never had a failure on either of my Plus 8's in about 50,000mls and 11 years to put things in perspective for you.
2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev
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Joined: Sep 2014
Posts: 203 Likes: 8
L - Learner Plates On
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L - Learner Plates On
Joined: Sep 2014
Posts: 203 Likes: 8 |
My brake lights stay on intermittently, I give the switch a gentle tap then light goes out.
Does anyone have a part # please?
I believe these switches aren’t very reliable, as an alternative has anyone tried mounting a micro switch off the brake pedal? Here is the part you requested Dave. Slaving a relay will remove the current factor from the hydraulic switch as John suggests, this makes them far less prone to failure. I have never had a failure on either of my Plus 8's in about 50,000mls and 11 years to put things in perspective for you. Minés a similar age and mileage and I’m on my 4th switch, c’est la vie
Mike H
Bourgogne Franche Comté
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Joined: Oct 2010
Posts: 310 Likes: 12
Learner Plates Off!
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Learner Plates Off!
Joined: Oct 2010
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Part of the problems seems to stem from the draw created by the additional brake light. I fitted a new switch and replaced the brake lights with LEDs. everything seems hunky dory now and for the past five or six years
Series 1 Roadster - the original Plus 6!
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Talk Morgan Regular
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Talk Morgan Regular
Joined: Feb 2013
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Why not fit LED brake light bulbs, problem solved and no need for a relay.
David Byrne
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Joined: Jul 2007
Posts: 27,840 Likes: 764
Member of the Inner Circle
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Member of the Inner Circle
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Posts: 27,840 Likes: 764 |
Mine still failed even with leds. I did a flying change which worked
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Nov 2015
Posts: 8,701 Likes: 501
Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,701 Likes: 501 |
Part of the problem is the poor quality of OE replacements, that's why +8 Richard's originals are still working
Jon M
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