Hey everyone, I've posted here before asking questions about Electric Railroad company boards, signaling on pins, etc... for my Lionel legacy TMCC based system. Huge thank you to those that have supported my questions.
I'm now looking for recommendations on connector systems, parts lists, manufactures, etc.. Also panel mount meters to monitor AC power. I'd like to monitor the AC to track blocks, visually as well as through some digital means (feed into arduino / raspberry pie). Any recommendations?
And... connector systems 
I get lost in a ocean of part numbers, no sense of what is overkill, what works / doesn't work, etc... Most of the wiring is 22g stranded, and sensors are 28g solid. I'm mostly focused on connectors from loose wiring onto PC boards and junctions to control panel. I'm trying to avoid too many terminal blocks. I like ability to drop in test harnesses or have a backup / spare to use at a workbench.
Regards,
Dave
