@gunrunnerjohn posted:The marker lights were doubtless wired to the headlight circuit. The R2LC-07 has a positive headlight output, the R2LC-08 has a negative headlight output. Swap the polarity of the wiring to the markers and they'll light again.
John—bingo! That did it. I never would have figured that out without your help. There are two sets of wires that plug into the motherboard for each set of marker lights. They are indeed wired into the headlight circuit via the plate to the right of the motor in the picture below. You have to make sure when the shell is being put on that the contact springs in the shell from the headlights (seen in the picture below) make contact with the plate in the body (makes it a tad tedious as I’ve had a flickering headlight before due to them not making contact just right... 
. On another note, I thought I had a gremlin in my newly installed CC-M and/or new R2LC-08 as the train starting behaving erratically yesterday. I figured out today that I had accidentally split the small bit of solder on the antenna wire where it connects to an eyelet on the antenna/small metal strip... resoldered and is good again. Never a dull moment! Again appreciate the expert advice/help! DawgTrainman
