|
|
|
|
|
|
|
|
|
|
tow bar
by G Walker - 24/08/26 06:52 PM
|
|
|
|
|
Forums39
Topics49,836
Posts837,249
Members9,596
| |
Most Online1,063
Jun 14th, 2026
|
|
|
|
Joined: Nov 2015
Posts: 8,656 Likes: 487
Just barreling along Needs to Get Out More!
|
OP
Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,656 Likes: 487 |
This is the SW for the later Trads, think it's 'normally closed'
I think someone managed to find a direct alternative for the floor mounted plunger switch a couple of years ago ?
Could someone kindly post the details please...
Jon M
|
|
|
|
|
Joined: Mar 2017
Posts: 2,273 Likes: 38
Talk Morgan Expert
|
|
Talk Morgan Expert
Joined: Mar 2017
Posts: 2,273 Likes: 38 |
This is the SW for the later Trads, think it's 'normally closed'
I think someone managed to find a direct alternative for the floor mounted plunger switch a couple of years ago ?
Could someone kindly post the details please... Not sure if this is the correct switch you are talking about, but this is the one I bought and fitted to my 2016 4/4 ![[Linked Image]](https://www.tm-img.com/images/2022/08/05/BCB0F7D4-DAB6-4976-BA0A-0E7DA1EDAA04.jpg) ![[Linked Image]](https://www.tm-img.com/images/2022/08/05/CBFC6953-31C0-4124-9383-A1A6BCC2EBD5.jpg) ![[Linked Image]](https://www.tm-img.com/images/2022/08/05/2C3132E6-F1EC-4B98-8D43-66ED65618313.jpg)
Craig Jezz
|
|
|
|
|
Joined: Jul 2019
Posts: 5,432 Likes: 465
Charter Member
|
|
Charter Member
Joined: Jul 2019
Posts: 5,432 Likes: 465 |
From a very dull memory, Of the two switches I thought one had it`s internal contacts Normally Closed (NC) and the contacts other switch mounted alongside were Normally Open (NO) although both switches are externally identical...?
Happy to be corrected if that is wrong info..
|
|
|
|
|
Joined: Mar 2017
Posts: 2,273 Likes: 38
Talk Morgan Expert
|
|
Talk Morgan Expert
Joined: Mar 2017
Posts: 2,273 Likes: 38 |
From a very dull memory, Of the two switches I thought one had it`s internal contacts Normally Closed (NC) and the contacts other switch mounted alongside were Normally Open (NO) although both switches are externally identical...?
Happy to be corrected if that is wrong info.. I just googled it. Pedal at rest: The plunger is pressed in, so the contacts are open and there is no electrical continuity (open circuit). The brake lights are off. Pedal depressed: The plunger is released, so the contacts close, creating a closed circuit. The brake lights turn on.
Craig Jezz
|
|
|
|
|
Joined: Jul 2019
Posts: 5,432 Likes: 465
Charter Member
|
|
Charter Member
Joined: Jul 2019
Posts: 5,432 Likes: 465 |
From a very dull memory, Of the two switches I thought one had it`s internal contacts Normally Closed (NC) and the contacts other switch mounted alongside were Normally Open (NO) although both switches are externally identical...?
Happy to be corrected if that is wrong info.. I just googled it. Pedal at rest: The plunger is pressed in, so the contacts are open and there is no electrical continuity (open circuit). The brake lights are off. Pedal depressed: The plunger is released, so the contacts close, creating a closed circuit. The brake lights turn on. From your description the brake light switch operation, it would seem to be a NC.
|
|
|
|
|
Joined: Mar 2009
Posts: 2,290 Likes: 9
Talk Morgan Expert
|
|
Talk Morgan Expert
Joined: Mar 2009
Posts: 2,290 Likes: 9 |
I bought several of the type Craig shows but because they took a while to arrive I decided to disassemble the original and with a bit of reshaping and oiling of the plunger, got it working again. There was a lot of dirt in the plunger housing.
|
|
|
|
|
Joined: Aug 2010
Posts: 5,464 Likes: 171
Charter Member
|
|
Charter Member
Joined: Aug 2010
Posts: 5,464 Likes: 171 |
From a very dull memory, Of the two switches I thought one had it`s internal contacts Normally Closed (NC) and the contacts other switch mounted alongside were Normally Open (NO) although both switches are externally identical...?
Happy to be corrected if that is wrong info.. That is correct. Craig is also correct. The NC switch is for the brake light. The NO (Normally open) is an ECU input. I carried spares of both for my 2014 4/4.
Paul
Costock, UK
Plus Four 75th - Furka Rouge - Pip
Disco 5
Teddy - 17h1 Irish Draught cross
|
|
|
|
|
Joined: Jul 2019
Posts: 5,432 Likes: 465
Charter Member
|
|
Charter Member
Joined: Jul 2019
Posts: 5,432 Likes: 465 |
From a very dull memory, Of the two switches I thought one had it`s internal contacts Normally Closed (NC) and the contacts other switch mounted alongside were Normally Open (NO) although both switches are externally identical...?
Happy to be corrected if that is wrong info.. That is correct. Craig is also correct. The NC switch is for the brake light. The NO (Normally open) is an ECU input. I carried spares of both for my 2014 4/4. Many thanks for confirming the difference between the two switches Paul, I always had a poor memory, which has not improved with age.... I suspect those switches will be available from RS, the yellow label on the pic Craig posted looks like one of theirs...? While cleaning and lubricating the plunger can seem ideal, oil is an insulator and may cause issues if it gets onto the internal contacts.... Very unlikely....BUT..? I just put the part number into RS and tripped over this switch. there will be a different part number for the other switch one being NC and the other being NO.. https://uk.rs-online.com/web/p/push-button-switches/1036252
|
|
|
|
|
Joined: May 2014
Posts: 5,437 Likes: 131
Black Rat Charter Member
|
|
Black Rat Charter Member
Joined: May 2014
Posts: 5,437 Likes: 131 |
My BL switch failed about 5 years ago, I ordered a new one and in the meantime gave the old one a good squirt of WD40 and it's still works.
Keith
2013 narrow bodied + 4 Ruby.
|
|
|
|
|
Joined: Nov 2015
Posts: 8,656 Likes: 487
Just barreling along Needs to Get Out More!
|
|
OP
Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,656 Likes: 487 |
Thanks for the info everyone & thanks for the images Craig 
Jon M
|
|
|
|
|
