Stan2004,
I thought the 1,000 uF capacitor was too small because I have a much larger one on a crossing gate that I used in an old layout (not installed yet on new layout), so I bought two 22,000 uF capacitors with the old RS relay and bridge rectifier and they work great! No chatter! I get about a 4 second timer with them and that's just fine.
For the new block signal not yet installed, I went ahead with your suggestion and bought two of these. They look just the same as what you posted. couldn't get it cheaper. most of the search results on ebay have two connectors on one side, not the three you posted, and it was the best I could do after bargaining. Not a big deal. Once they come in, which will be weeks from now, I will post here and ask for your help with the timer piece if I need it (I will probably will!).
appreciate your time helping out
6-30V Relay Module Switch Trigger Time Delay Circuit Timer Cycle Adjustable
$8.53 for both.
Item number:353354570824
