I did some calculations wrt wire guage vs current and voltage drop. If (and I did not measure the wire guage) the wire is 22 guage, then at 1.2 amps, the voltage drop would be about 0.2 V. That amount of drop may or may not be significant. Given the results of the above experiments, it likely is significant, especially in Night Mode, where the extra power is requred for the IR leds.
Actually, I suppose I should measure the current draw and the voltage drop in Night Mode: has anyone done this?
When I think about this problem, perhaps the best/easiest solution is to use a light guage 110 v extension cord to supply the dlink switching supply, and use the existing as supplied out of the box. No soldering required. Light guage two conductor extension cords are cheap.
Regards,
Bob