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Question 37591 SBB Ae 8/14 installation of LokSound 5 Decoder - Wiring of lighting with LokSound 5 need for resistors
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Offline jpklecker@yahoo.com  
#1 Posted : 18 July 2024 23:32:25(UTC)
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jpklecker@yahoo.com

United States   
Joined: 13/01/2021(UTC)
Posts: 15
Experienced LokSound 5 decoder installers please.

I have a 37591 Locomotive SBB Ae 8/14 with a C90 decoder that I am upgrading to a LokSound 5 decoder. I tried reaching out on this site to a member that has done this conversion but sadly they have not replied to my request for assistance.

This locomotive appears to have three sets of 2 LEDs wired in parallel: 1) for two front lights, 2) for 2 rear lights, and 3) for the 2 Swiss lights (lower right light in front and in back).

My question is do in need to install resistors to reduce the current flow to protect the LEDs that are wired in parallel for each of the three circuits?

If I do need to install resistors what Ohms do I need - I do have 1.2k resistors available.

The help from any experts out there would be greatly appreciated!
John from AZ
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Offline mike c  
#2 Posted : 19 July 2024 05:08:42(UTC)
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mike c

Canada   
Joined: 28/11/2007(UTC)
Posts: 8,239
Location: Montreal, QC
I would contact Jacques Vuyes or JeanJeanB through the forum. You can also submit your question to Rick Sinclar at digital(at)Marklin.com

Good luck

Mike C
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Offline river6109  
#3 Posted : 19 July 2024 05:22:07(UTC)
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river6109

Australia   
Joined: 22/01/2009(UTC)
Posts: 14,875
Location: On 1965 Märklin Boulevard just around from Roco Square
Hi there, it depends on whether you use the circuit board if you do the circuit board has resistors if not the ones you've described are ok.
I do the following programming:

FO: forward top and right hand bottom Led
FO: reverse top and right hand bottom Led
Aux forward 1, 2, 3, 4, 5, 6, 7, 8 : left hand bottom Led
Aux reverse 1, 2, 3, 4, 5, 6, 7, 8 : left hand bottom Led
Aux forward 1, 2, 3, 4, 5, 6, 7, 8 : left hand marker light
Aux reverse 1, 2, 3, 4, 5, 6, 7, 8 : left hand marker light
Aux forward 1, 2, 3, 4, 5, 6, 7, 8: right hand marker light
Aux reverse 1, 2, 3, 4, 5, 6, 7, 8: right hand marker light
if you do interior cab light: use another 2 Aux functions, e.g. Aux 7 & 8
I've converted mine (Trix model) with a loksound 5 Plux 22, adapter plate, 2 cube speaker, (interior cab light, interior motor light, lit up steps = these are all connected together)
Will let you know how I did the wiring

John
https://www.youtube.com/river6109
https://www.youtube.com/6109river
5 years in Destruction mode
50 years in Repairing mode
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Offline French_Fabrice  
#4 Posted : 19 July 2024 12:10:13(UTC)
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French_Fabrice

France   
Joined: 16/05/2011(UTC)
Posts: 1,489
Location: Lyon, France
Hello,

I did such a conversion recently, on my 37591 dated from 1997.

If you keep the Original LEDs, then YES you MUST set resistors on LEDs. 1.2K is a good value.

See my attached PDF, for various schemas, before and after conversion. 37591.pdf (132kb) downloaded 31 time(s).
I first did a conversion with the original LED set, and put 1.5K and 1.2K on each LED set (Front light, rear light, aux1 and aux2). It was working fine.

I decided later to change the original LED set with a LUESSI 8088 couple of LED boards. See there: https://luessi.ch/eshop/..._263&product_id=2437 . It provides additional red led, and had also the resistors embedded. For red led, I've used AUX3 and AUX4.

ESU has a sound project available for this loco: see this page https://projects.esu.eu/...amp;country=ch&cat=7
Note: you need an ESU Lokprogramer to manage the sound project and load it into the LS5.

Some photos after the conversion (original led boards):
UserPostedImage
UserPostedImage
UserPostedImage

See also below the mapping functions for latest version with Luessi boards.
UserPostedImage


Have fun
Fabrice
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Offline Dave Banks  
#5 Posted : 19 July 2024 23:23:21(UTC)
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Dave Banks

Australia   
Joined: 08/03/2006(UTC)
Posts: 1,043
Location: Gold Coast, Australia.
This is my Ae 8 /14 with Luessi Board #8015 & ESU loksound decoder:

[img]UserPostedImage[/img]

[img]http://UserPostedImage[/img]

[img]UserPostedImage[/img]

[img]UserPostedImage[/img]
D.A.Banks
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Offline jpklecker@yahoo.com  
#6 Posted : 14 November 2024 00:48:15(UTC)
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jpklecker@yahoo.com

United States   
Joined: 13/01/2021(UTC)
Posts: 15
I have a question with the installation of the Luessi 8088 Ae 8/14 light boards with their 8055 Ae 8/14 decoder adapter board.

I have the 8088 installed plus the 8055 and all works great - headlights plus the white Swiss lights and sound. The question is how do I map the ability switch to use the red Swiss light instead of the white Swiss lights at the rear side of the locomotive.

Per Luessi instructions I have the the front Swiss light connected to Aux 1 and the front red Swiss light connected to Aux 2. For the rear Swiss light I have it connected to Aux 3 and the Swiss red rear light connected to Aux 4. These connections are on the front and rear ends of the 8055 circuit board - Aux 1 and 2 at the front and Aux 3 and 4 at the rear.

Aux 1 and Aux 3 are mapped to come on with F0 forward and F0 reverse lighting, which as I mentioned is working correctly.

Just not sure how to map the ability to switch from the Swiss white rear light to the Swiss red rear light.

Also how to map out the A-lighting for all three white lights on at both ends of the locomotive at the same time.

Can anyone please provide some assistance for programing the ESU LokSound 5 decoder, I am still learning how to do this but with very little actual experience?
John from AZ
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Offline French_Fabrice  
#7 Posted : 14 November 2024 08:32:43(UTC)
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French_Fabrice

France   
Joined: 16/05/2011(UTC)
Posts: 1,489
Location: Lyon, France
Hello,

Please see below the function mapping of my 37591 (see my previous post for function list).

UserPostedImage

Please note the following: As I have ticked the 'Reverse direction' bit, all outputs (F0F, F0R), (AUX1,AUX2), (AUX3,AUX4) are swapped.
That explains why for 'Forward' mode, I use 'Rear lights', etc...
This behavior seems to be new with LS5. In the past with LS4, only F0F and F0R were swapped in case of reverse direction bit set, and various AUX were left intact...
It seems now it is no more the case.

Cheers
Fabrice

Edited by user 14 November 2024 12:07:39(UTC)  | Reason: Not specified
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Offline 5HorizonsRR  
#8 Posted : 14 November 2024 23:45:43(UTC)
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5HorizonsRR

United States   
Joined: 05/12/2004(UTC)
Posts: 2,977
Location: CA, USA
Hi all,

This reminds me my own Luessi conversion is not complete, from this thread: https://www.marklin-user...-Ae-8-14---PC-Board-Part


Fabrice- if I read your reply correctly, I cannot use the factory LEDs with the Luessi board, unless I add resistors? Or you mean without a Luessi board you need them?

That might explain my conundrum, hence asking.

Thanks!
SBB Era 2-5
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Offline French_Fabrice  
#9 Posted : 15 November 2024 08:07:12(UTC)
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French_Fabrice

France   
Joined: 16/05/2011(UTC)
Posts: 1,489
Location: Lyon, France
Originally Posted by: 5HorizonsRR Go to Quoted Post
Hi all,

This reminds me my own Luessi conversion is not complete, from this thread: https://www.marklin-user...-Ae-8-14---PC-Board-Part


Fabrice- if I read your reply correctly, I cannot use the factory LEDs with the Luessi board, unless I add resistors? Or you mean without a Luessi board you need them?

That might explain my conundrum, hence asking.

Thanks!

Hi John,

The Factory LEDs don't have resistors embedded. So you need to provide resistors to them, whatever the PCB decoder you use. Luessi PCB boards (8015,8054,8055) HAVE resistors embedded (from the documentation).
I've not used Luessi PCB board in my 37591, only an ESU 51968 adapter + LS V5 and soldered the wires myself. When I've added later the Luessi 8088 LED boards, I've removed the resistors ((1,5K & 1.2K)x2) I've previously added, because 8088 HAS resistors embedded.

Cheers
Fabrice
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