RailPro > RailPro Specific Help & Discussion
INSTALLING LM-3S in PROTO 2-000
Tom:
If anyone could help again, it would be very much appreciated.
I now have all the supplies, tools and components: I just need to find out what to do with them. The locomotive has up front so to say, a motor, a headlight and a MARS light. If there is anything else I have no idea what it might be.
See the attached wiring diagram. It has the numbered labels that are on the circuit board from which wires run into the locomotive. Given the labels (I do not know if the numbers mean anything) I think the M+ and M- are going to the motor, COM is the common + wire, and FL- is the front light. That leaves MATHS, R+ and L- unknown as to where these wires go and what they are for.
Does anyone have any ideas as to which one is the MARS light and what the other two are for? If I figure out which one is the MARS light can I just forget about the other two?
I am thinking that the only way to run the tender light is to put a splice in the Ring blue common wire and run one to the COMM on the circuit board gong to the locomotive and one to the tender light. Is this correct?
nodcc4me:
The blue wire needs to connect to all three lights, so yes, splice it and run it to the tender bulb. You can use either the green or violet outputs from the 6-pin plug for the mars light and the tender. You will set the wire color for each of the lights in the HC after the wiring is finished.
Tom:
Thanks Al.
That solves one part of the problem. I have still not figured out what the wires attached to the circuit board labeled as MTHS, R+ and L- are for, let alone which one might be for the MARS light. But I have come up with another idea you might be able to weigh in on.
The QSI Quantum System decoder in the locomotive works either with DC or DCC. When operating on DC the lights and sounds (there many) operate when power is applied. Two other more or less essential sounds are the whistle and bell. These are activated by manipulating the power pack directional switch in certain sequences and usually has to be done quickly to avoid losing power. Both the LM-3S and the original decoder will fit in the tender and quite likely a KA if needed. The only things that might cause a power loss to the decoder would be the HC-2 or the LM-3S.
I am thinking that I can connect the Ring WH-9 wiring harness red and black wires to the wires coming from the track power pickups and the orange and gray wires to the 2 Pin connector on the decoder circuit board (where the power gets to the decoder). RailPro is DC, so this way I would be controlling power to the original decoder via the HC-2 using only the directional button and the throttle; basically operating the locomotive in DC mode. The original decoder would not know the difference, right?
Tom
nodcc4me:
Tom, I understand what you are trying to do, but I'm not sure that will work because the orange and gray wires should go to the motor inputs. My familiarity with DCC is somewhat limited, but from the features you mentioned, the LM3-S should be able to handle all of them. I have just removed the DCC board and wired all the lights and sounds directly to the module. I have removed a few DCC boards and done it that way.
faithie999:
would R+ be "right rail, +15v", and L- be "left rail, -15v"?
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