Unfortunately, I don’t have an ohmmeter. Although, I probably should have one for a project like this. I bought this loco used thinking it might need some repair, but I didn’t realize how extensive it was going to be until I opened it up.
Also, I think I was mistaken about the brown wire going to the R2LC. I think the brown wire for the headlight might have come off of a leoco connector to the PCB. I thought this might be for the TMCC directional lighting and for the headlight flashing when programing the loco/momentum settings.
I circled in red where I think the wire originally came from on the PCB, but I’m not certain. Do you know where I can find a pinout for the PCB? I can’t seem to find one.
Part Number: 691PCB10B9
Part Name: MOTHERBOARD / ENGINE / K-4 PACIFIC