I have looked at the 101 manual and gone through as many of the injection posts as I can find but... first the setup: 19 each 12 volt 2811 strips (5 meter) 50 pixel group total of 150 pixels per strip (CCR style). San Device P12R controller and 12 Volt regulated 30 amp power supply. Connected with 18 gauge connectors. and will be strung with 3 srips end to end (zig zag style) for a total of 7 virtual strings (19 vertical strips). Issue is using a 30 amp power supply or a 600 watt ATX power supply, setting color to white results in white turning to orange and then to red at about mid way through the 3 strip string to the end. (Assume due to voltage drop). I would expect that the answer to be inject power half way through each 3 strip string which whould be inconveniount? Due to the setup it would be easier to inject power the the far end of each 3 strip string (near end powered by the P12R). Do I just connect power and ground to the output side of the 3 strip string? ( can I use the additional connectors on the power supply's (each has 3) for the power injection? I am quezy about applying power to both ends of a string.