Pete, John.... Thanks for the input. To add a second CCM to the trailing A unit is the direction I had considered if 4 motors were too much. A ten pin tether is no problem, still have a few to use, last I installed was in the PS1 4012 when I put in ERR TMCC/RS. Yes, I checked the amperage and it was in neighborhood of 4A with 8 freight consist. But pulling 11 to 13 CZ aluminum...……..? Another consideration, what I did to a repaint PW F3 AA, both pulmor dual power, was to upgrade to ERR AC/DC Commander (would be DC in the 2nd E8) and with 2nd CCM run them as a train unit, or independent. Do not have CC in F3s, not needed..... yet. Driving both CCMs with a single R2LC.... hmmmmmmmm…...
Jesse