Suggestions for the 4 pin header connections on the Dual and Quad SSR’s with .025” square input pins
 
Amp: 640440-4, (22 Awg); 640441-4, (24 Awg); 640442-4, (26 Awg)
 
Molex: 14-60-0043; 14-60-0041; 14-56-6049; (for Awg 26, 24, and 22 respectively) These Molex parts come with the sockets pre-loaded.