 Joined: 15/02/2018(UTC) Posts: 167 Location: England, St Ives
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Hello. I wanted to add a cabin light to two of my locos: BR245 and BR94.5. They both have an msd3 decoders. Am I right? Now, according to a manual they have 4 functions available. Question is, where are they? There is no marks on a boards.  
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 Joined: 01/05/2016(UTC) Posts: 623 Location: Athens
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Hi
The AUX 1 is on pin 15 Cable color Br/Red
The AUX 2 is on pin 17 Cable color Br/Green
The AUX 3 is on pin 19 Cable color Br/Yellow
The AUX 4 is on pin 8 Cable color Br/White
You have to follow them on the board to see where they go and if is anything connected to them.
Some times the outputs have no any connection expect the mtc connector
Be very careful with the decoder. The 4 functions apply to the retrofit decoders, but not always for the original decoders
The best is to check the decoder with a decoder tester to see how many functions are available.
Usually all the mSD3 have 4
From the photos I can see that the motherboards are extremely simple, so the operation will be easy
You need of course a polymeter.
Regards
Costas
In the first picture I can see that the AUX 1 is connected to something (may be smoke generator - Br/Red wire???)
The AUX 2 has a solder pad just in front, Aux 3 going to the second solder pad in the series of 5 and AUX 4 has no any connection
Must be so but I can't be 100% sure just from this photo
in the second I can see that AUX 4 is going to a soldering pad but as is the picture I cant see what happen with the others
May be some better photos from 90 degree angle will help
Costas
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Joined: 15/02/2018(UTC) Posts: 167 Location: England, St Ives
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Thanks ktsolias. but I'm gonna bother you a little longer. Fisrtly, are the pins in this order? 
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Joined: 01/05/2016(UTC) Posts: 623 Location: Athens
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This is for Märklin  ESU (NEM) is different but the pins do the same job. Just the numbers and colors are different I have learn and use this one and I am happy!!! This is coming from HGH Costas
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 1 user liked this useful post by ktsolias
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Joined: 15/02/2018(UTC) Posts: 167 Location: England, St Ives
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Thanks ktsolias again. It starts making sens now. I will check it tonight.
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Joined: 01/06/2016(UTC)
Posts: 2,465
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Originally Posted by: ktsolias  Hi
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You need of course a polymeter.
Regards
Costas
...
You use a polymeter for what purpose, please? I know a polymeter as a small weather station only.
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Joined: 15/02/2018(UTC) Posts: 167 Location: England, St Ives
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I think he meant multimeter.
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Joined: 01/05/2016(UTC) Posts: 623 Location: Athens
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Originally Posted by: TEEWolf Originally Posted by: ktsolias Hi
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You need of course a polymeter.
Regards
Costas
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You use a polymeter for what purpose, please? I know a polymeter as a small weather station only. Bad translation from Greek to English..... Multimeter is a mixture of Latin -multi- and greek -meter- .....
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