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Dave Bellis



Member Since: 21 May 2014
Location: Shrewsbury
Posts: 133

United Kingdom 2014 Defender 90 Puma 2.2 HT Keswick Green
Aux light switch YUG000540LNF
Anyone know the current rating of the load contacts of the above switch...hoping to not have to fit a relay for an LED light rated 1.25 A...

Dave
Post #374881 28th Nov 2014 5:43pm
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PaulMc



Member Since: 17 Jan 2009
Location: Kent
Posts: 469

United Kingdom 1989 Defender 110 2.5 TD HT Arles Blue
The heated seat switches of the same design, switch around 7A - so, this switch should be more than capable of switching 1.25A

You should be aware that this switch switches to earth.

There's a wiring diagram, showing how to wire this switch, here - http://www.defender2.net/forum/post6360.html#6360


The design of this switch will cause you problems if you want the switch's tell-tale LED to work, as this is normally fed from the output side of the relay, to pin 5 of the switch.

Without a relay, it's not possible to have the tell-tale illuminate when the switch is on.

I would suggest that you get a Puma heated seat switch (YUF500150LNF), which costs around a fiver new.

Swap the switch front from YUG00540LNF on to the switch body of YUF500150LNF (they both use the Black 5-way switch connector) - and you now have a live switching switch, in which the tell-tale LED is fed from the output side of the switch (pin 4).

A diagram for YUF500150LNF can be found, here - http://www.defender2.net/forum/post306063.html#306063

. Paul.
1989 Arles Blue 2.5TD 110 Hardtop
1999 Epsom Green Discovery II 4.0 V8i 'XS'
Post #374914 28th Nov 2014 7:29pm
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Dave Bellis



Member Since: 21 May 2014
Location: Shrewsbury
Posts: 133

United Kingdom 2014 Defender 90 Puma 2.2 HT Keswick Green
Top man Paul thanks for the info.......all sorted


Dave
Post #374982 28th Nov 2014 10:56pm
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Alex - RSA



Member Since: 06 Aug 2020
Location: Durban
Posts: 1

South Africa 2003 Defender 110 Td5 DCPU Corris Grey
Hi Paul,

I know this is a REALLY old thread, but I am battling to wire some switches and your directions have got me the closest I have come so far.

I managed to get my hands on some Bearmach Momentum One Touch Switches with facias for various LED lights front and back. By following your directions and modifying the internal circuit, separating pins 3 and 4 I have the lights coming on when the switch button is depressed but as soon as I let go the lights go off. So the "One Touch" closing of the circuit is not working as it does with the standard Rear Fog Light switch.

Please HELP !!!
Post #848441 6th Aug 2020 8:56pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
When used for the rear fog light, it's in conjunction with a latching relay. The function isn't built into the switch.


Click image to enlarge


This thread may help:

https://www.defender2.net/forum/post723463.html Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #848511 7th Aug 2020 9:45am
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 983

Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Latching electronic circuits are available, if you don't need or already have a non-latching relay.
This is for upto 1.5 A:
https://www.conrad.com/p/tru-components-sw...pcs-701240
Post #848585 7th Aug 2020 8:16pm
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eliteaccess



Member Since: 15 Jan 2021
Location: stafford
Posts: 2

United Kingdom 
Heated seat switch used for a work light switch
Has anyone come across a problem i have found. I am using the YUF500150LNF defender heated seat switch. I have a wiring diagram showing pin 1 perm live, pin 2 switched live from dash lights, pin 3 unused, pin 4 live switched output to accessory and pin 5, earth/ground.

Everything works, apart from when i push a live into pin 2, the green LED doesnt come on. The amber one works fine as does the switch. I have tried a second switch and the same thing happens.

has anyone else come across this?
Post #878666 15th Jan 2021 5:42pm
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Likeomg



Member Since: 29 Jun 2012
Location: Lake District / Newcastle
Posts: 2623

2010 Defender 90 Puma 2.4 HT Stornoway Grey
this is something I need to sort on my switches...
Post #878680 15th Jan 2021 7:15pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
Re: Heated seat switch used for a work light switch
eliteaccess wrote:
Has anyone come across a problem i have found. I am using the YUF500150LNF defender heated seat switch. I have a wiring diagram showing pin 1 perm live, pin 2 switched live from dash lights, pin 3 unused, pin 4 live switched output to accessory and pin 5, earth/ground.

Everything works, apart from when i push a live into pin 2, the green LED doesnt come on. The amber one works fine as does the switch. I have tried a second switch and the same thing happens.

has anyone else come across this?

It certainly sounds like it should work Confused Have you tested that you're actually getting 12v from whatever feed you've taken from the instrument lights?


Click image to enlarge
 Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #878705 15th Jan 2021 8:55pm
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eliteaccess



Member Since: 15 Jan 2021
Location: stafford
Posts: 2

United Kingdom 
yeh thats the wiring diagram i used. yes deffo have 12v on the input wire for the green backlight.
Post #878708 15th Jan 2021 9:00pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
Not sure in that case, I'm afraid. As you've tested two switches, it suggests there's something more fundamental with the way that you're making the connections but it's difficult to be more specific. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #878732 15th Jan 2021 10:19pm
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