OK I know enough about electronics to build most things but I am having a world of trouble with LED strings and their operation. Here is the deal. On my gutters I want to put a run of LED lights that contains 6 strings (Green, Blue, Amber, Purple, Yellow and Red) they are set up each as a separate run with a common return (the common is the positive side which is common on the board. Each string is in series and I did the calculations for the resistor for a 48volt supply. I am using two of the DC ssr from Labrat (8 total channels with 2 unused). My problem is that each string runs fine by its self but if two string go on at the same time they drop out and just glow. What am I doing wrong? My supply has 8 amps so there should be enough to drive it all. I am stumped and could use some help.