I have a Railking 0-8-0 and have run into an issue that I hope is easy to answer. I want to convert this from DCS to TMCC using ERR Cruise Light and sound. I have done other conversions with ERR boards in the past without any issues, but for some reason "I can't see the tree for the forest" on this one.
Easy Part:
I removed all the electronics from the tender. Installed a Cruise Lite with the R2LC. Connected rear coupler, rear light and motor to the Cruise Lite. Tested the connections. Engine runs as it should and coupler and light works. GREAT start.
Another easy part:
Traced all the connections from the engine to the rear circuit board and tether cable. ID'ed the headlight, smoke unit, fan, cab light and coupler. Got all that written down and diagrammed.
Hard Part:
On the rear circuit board, there is what appears to be a resistor that is connected to the common??? side for the head light, cab light, coupler, and smoke unit. Both fan wires go directly to connections on the rear circuit board, no common???
I noticed that the cab light and coupler connections on the rear circuit board appear to be common to each other as well as to the resister on the same board. Also, the frame is totally isolated from any connections on the circuit board including the resistor. So no ground or common come from the drivers. This engine does NOT have rollers, only on the tender.
I have yet to get the front coupler to operate. I have been able to connect the front and cab light and they go out when changing direction of the engine.
I am confused as to where I can find ground from the engine, other than from the resister???, but there is no connection from this to the tether.
If anyone is familiar with the set up of this engine and can give me some help, I would appreciate it.
I can send photos or drawings if that would help, but hopefully someone has already done this conversion and can help me see better.
I have confirmed that the Cruise Lite and R2LC are working correctly, no defects.
RAY