rtr12 posted:...Here are some pictures of the MTH traffic signals for you, for reference, if you don't have them already. Also, not sure what type of connectors these are? Maybe someone will be able to ID them and post the info?
Moot at this point if using screw-terminal connectors on the PCB, but that could be the Molex mini-SPOX connector:
If this is indeed the correct connector system, here's the 4-pin PCB-side vertical header from DigiKey.
I bring it up because it reminded me of another DIY PCB hack. Note the SPOX is a 2.5mm (0.098") pitch while many connectors are 2.54mm (0.1") pitch. So if you do the math on the connector pin diameters and PCB holes size, you can easily install either a 2.5mm OR a 2.54mm connector for short connectors like the 4-pin used in the traffic signal. Some free-ware/share-ware PCB layout program may not have a library of 2.5mm footprints and if not used to creating new components, it can be expedient to use an existing 2.54mm component which every layout program has.
