 Joined: 05/12/2004(UTC) Posts: 2,976 Location: CA, USA
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Scrap this initial post! See my post number 7 below where I get to the root of what I'm trying to do- add LED lights to the steuerwagen function decoder Edited by user 21 September 2024 20:46:01(UTC)
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 1 user liked this useful post by 5HorizonsRR
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Joined: 10/02/2021(UTC) Posts: 3,902 Location: Michigan, Troy
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I know this was covered before some time ago. I don't remember the particular couplers Roco uses. The digital set has a decoder in the control car, and the locomotive either has a conducting coupler or a slider for 3 rail can be fitted.
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Joined: 05/12/2004(UTC) Posts: 2,976 Location: CA, USA
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Thanks- I've seen the prior threads (maybe I missed one) but they don't cover the details I'm chasing. |
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Joined: 02/08/2014(UTC) Posts: 785 Location: NEW JERSEY, USA
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I love the smell of smoke fluid in the morning . |
1 user liked this useful post by analogmike
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 Joined: 28/11/2007(UTC) Posts: 8,230 Location: Montreal, QC
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If I recall correctly, the 64022 was an AC set where the pilot coach had a slider and LED head/taillights. That set did not include interior lights or current conducting couplers. That was part of the "Spirit of Germany" consist.
The new set 74042 has LED interior lighting (digitally controlled) and current conducting couplers. I do not know if that means that each coach has its own digital control or whether the lighting can be controlled from the pilot coach of the matching set.
Regards
Mike C
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Joined: 05/12/2004(UTC) Posts: 2,976 Location: CA, USA
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Originally Posted by: mike c  If I recall correctly, the 64022 was an AC set where the pilot coach had a slider and LED head/taillights. That set did not include interior lights or current conducting couplers. That was part of the "Spirit of Germany" consist.
The new set 74042 has LED interior lighting (digitally controlled) and current conducting couplers. I do not know if that means that each coach has its own digital control or whether the lighting can be controlled from the pilot coach of the matching set.
Regards
Mike C Correct Mike. I might just need to plan for the 64022 to wire up via 2 pole couplings, for which I have enough of the fleischchmann profi examples on hand. (sold as a roco part if I remember correctly) The hope is that 74042 has a decoder, and I just run whatever couplings they use (presumably the fancier roco ones but I need to make sure there are no eccentricities, hence the questioning) from that to my existing set, thereby controlling lighting. I'd leave the cab control lighting alone as analogue The smart answer is to probably skip the 74042, but I found one at a great price that justifies the investigation... |
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Joined: 05/12/2004(UTC) Posts: 2,976 Location: CA, USA
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Hi everyone, With the day off work, I was able to dig deeper. More information, and more questions if any of you actually own a Roco railjet: Revised problem statement: All I need to do is figure out where to solder LED interior lighting into. My two possibilities appear to be via locomotive 2 pole coupling, or via the steuerwagen PC board. The latter sounds much more likely, but I have no idea where to solder them to on the base plate. More factual information: 1- My locomotive, #68366, has the coupling shown with a 4 pin connector, of which only two pins are "live". The instructions - all 4 booklets included- do not indicate what these two pins/wires are for, but according to the 2010 new items catalogue, the locomotive is set up for "direction-dependent current consumption," whatever that is? Knowing the control and voltage of these pins would be great. 2- My cab control car from set #64022, despite being the "no lighting" version, turns out to have a decoder and a fancy PC Board. See images. Instructions for MY car set and the decoder do not give me any more info, but looking at the SISTER (with lighting) set instructions online, interior lighting is controlled by the steuerwagen, not the locomotive. 3- Looking at the 2010 new items catalogue, it appears my cars are the "Railjet standard" offering, and the locomotive is the "railjet premium" offering. Does anyone know their way around the cab control steurwagen PCB? I'm guessing Roco used the same part for the version with lights, in which case I just need to learn where to solder onto it for adding my own LEDS as a function, but no idea how/where to trace this?. Thanks in advance!    |
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 Joined: 28/03/2007(UTC) Posts: 303 Location: Torino,
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I have 64090 that should be the high end version with lighting. Lighting is always on, not controlled by decoder. There is the same pcb, the LED strip is connected to the upper pads. first (from left) and second are positive, third and fourth negative. There is about 16 V across this pads. Decoder seems to be a regular PluX16 decoder, likely Zimo. CVs not readable from Lokprogrammer. I wonder if the unused decoder outputs are connected to the last two pads that are unconnected. Tomorrow I will check. The four round pads are for two electrolytic capacitors, 470 uF 50 V. Hope this helps. 
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2 users liked this useful post by mario54i
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Joined: 05/12/2004(UTC) Posts: 2,976 Location: CA, USA
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Mario - THANK YOU!!! This is exactly the information I needed!!
Please do let me know what you learn tomorrow when you check the last 2 pads.
This should make for a really easy lighting installation. I guess the only question left is whether the decoder can control them or not...
I really appreciate it...
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Joined: 28/03/2007(UTC) Posts: 303 Location: Torino,
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After further digging, I found that:
first and second pads are connected to decoder V+ (pin 9, beware that pin numbering of PluX16 is strange), third and fourth to AUX2 (pin 18), fifth and sixth to rails, seventh and eight to slider.
The last two go to two pads for a not fitted unknown component between them and nothing else. Reason unknown.
Furthermore AUX1 controls high beam headlights.
Decoder is mapped so that F5 controls AUX1 and F7 controls AUX2. So in principle F7 should control internal lighting but in my coach this doesn't happen, lights are always on.
Defective decoder ? I cannot test it stand alone.
Regards
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2 users liked this useful post by mario54i
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Joined: 05/12/2004(UTC) Posts: 2,976 Location: CA, USA
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Thanks Mario! This is really a big help. I need to order some parts, but I think I can add lighting easily based on the information. I'll need to test the decoder mapping in my own control car as well, but at least we know the board is wired for AUX2  I looked at Roco instructions online, and they say F7 should be the interior lights. See the attachment. Also this STUMMI THREAD about your same problem? Looking at your LEDs for the interior lighting, shouldn't they be soldered to pads 3&4 (AUX2) in order to have the digitally controlled lights go on and off with F7?  8064050921.pdf (43kb) downloaded 12 time(s).Edited by user 24 September 2024 02:31:31(UTC)
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