Paul__B:
Oh dear!Mike is not going to like you using them in parallel and without current limiting resistors.
Quite right strike two.
Time to do some serious reading about LEDs and how to drive them. Time to look at your power supply and see if it can still output the full voltage when you have that load on. Time to ask some serious questions about your meter.
Have you got a link to those LEDs? Couldn't find anything under FS-0441 LED when I googled it.
Each led-pcb draws 75mA when connected to a 15V power supply.
Dream on sunshine.