ADCX Rob posted:If you are using coaxial plugs, remember there are two connections you can use.
The tip, obviously, for the fixed voltage switch power. The sleeve can be used as an otherwise inconspicuous center rail connection for track power to supplement lockons or other power drop points.
Thanks. Hadn't thought of that. On the ones that fit, I've just been using the tip.
TrainLarry posted:The fixed voltage plug is part# 711-151 and is available from The Train Tender.
Larry
Thanks for the P/N. However, I have a few Lionel boot plugs, and they are also too tight. Does the part you referenced have a larger diameter opening?