Hotbox posted:OK here is where I stand today.
Fixed the backup light problem. Whoever owned the diesels previously, had somehow placed the backup light lead on pin 3 on the upper right connector. I moved it to pin F on the lower right connector. Refer to Johns LCRX diagram above or the schematic I referenced in Supplement 38, page S38:2-3. Both diagrams have the backup light lead on pin F. I placed the coupler 2 lead connector on pins C & D. That would be equivalent to the "R" coupler two pin connection point on John's diagram. My B unit (rear) coupler still doesn't work. You don't get the buzz sound that energizes the coupler solenoid but I do get the railsounds swooosh. Checked the coupler leads for continuity. I'm reading about 8 ohms which I guess is about right for the coupler coil.
My LCRX board is slightly different than the original. I would post hi-rez photos here but don't want to go through the bother of getting a web hosting site to hold my photos. So here is a link to the LCRX board I got from Lionel recently. My only concern is that I'm not sure pin C is ground and pin D gets the voltage pulse to energize the coupler.
LCRX link You have to press the item 17 photo icon to see the current LCRX board I have. I couldn't get the OGR link function to go there directly, possibly because the url was a mile long!
I believe we have inadvertently hijacked Art Lites thread. Didn't mean to do that, but we both have similar problems with the RS and TMCC functions. Art, if you want me to move the discussion for my problem over to my original post just say so. Otherwise I'll keep posting here to keep everything together.
Ken
OK, I read the directions for posting photos...here is a picture of the old (upper) and new (lower) LCRX boards...right click on image than select Open link in new tab...get huge hi-rez picture!
