Hi Stan,
So I have been buying the 3PDT on ebay as well but from a different supplier..... I get them with the base, in 4 packs for $9.50 free shipping, and they are definitely shipping from the US so I have been getting them within about 9 days of order. The 3PDT Relays are marked OMRON, designed in Japan, made in China.... See link below:
https://www.ebay.com/itm/US-Sh...p2057872.m2749.l2649
I am posting a few in process photos.... I am getting there but it's obviously a big project, 22 relays. 11 Westbound Signal heads, 11 Eastbound.....
I am going to employ an old Dell Battery charger to power this whole board it's got 75 watt capacity, 3 Amps at 19.5 VDC. I figure I will use 3 DC -DC Buck converters each rated for max 2 Amps. I am planning to use 1 to power the common anode NJ International signals, and the other 2 buck converters will each power 11 relay coils each... They have a 2 amp max rating and the relay coils draw 75 mA each, so I should be good to go with that set up. Just figured out how I wanted to solder in a 22 ohm 1/4W resistor into the trigger line (AC common), and add a 470uF capacitor across the coil terminals....
After I get the westbound bases labeled in sets for the outbound cables, I will probably print up some better labels for terminal strip, then it will be on to making up the cables. I picked up some nice Belden 30 conductor cable, 22 AWG, stranded tinned conductors to make up the cables from the relay panel to the signal locations.
It helped me to label all the eastbound signals odd numbers, and the wesbound even numbers to keep it all straight on the track plan drawing.....
Here are a few photos:
