I am just getting started at installing LMs into locomotives (steam seemed better to start with because of ample room in tenders) after having them installed for me. I started with one Proto 2000 Berkshire which went well, except that the lights blew out. That got fixed by buying 12V bulbs (incandescent I believe) which did not need resisters.
I am now faced with something a little more complicated and would like some insight if anyone is willing to provide it. The problem is a Proto 2000 with something called QSI Quantum System, which I had not seen before. The cleaver thing about it is that one can run it on DC and do about all the things that can be done using DCC – whistle, bells and more.
The problems (see picture attached):
1) I would like to preserve the original wiring connections so as to allow easy reinstallation of the original decoder. And more importantly, it will also make it much less likely that I will ruin the whole thing. This means I need two 2 pin, one 4 pin and one 8 pin receptacles with wires protruding. I have seen something on internet called JST-2 which looks like it might work, but do not know for sure. Are there 2, 4 and 8 pin receptacles that can be attached from which to run the wires to an LM-3S?
2) If you look at the picture there are 13 wires that need to be attached to an LM-3S. The photo attached identifies all the wires. I understand how the 2 going to the speakers will attach, but that leaves 11 wires to attach to a 9 pin LM-3S. Which 2 are not needed, or where do they get attached to the LM-3S, the 6 pin side?
3) The locomotive has a MARS light. There is one white wire and two yellow wires going to the locomotive, which seems to be one extra wire, except that does there not have to be two wires running to each of these bulbs – in that case there is one wire short? Does anyone know which wires are what so they can be connected correctly to an LM-3S correctly?
4) Any idea if the light bulbs in this locomotive need to be replaced with 12V bulbs?
Any comment even if not addressing all the questions will be appreciated.