My 2004 Pentair SAM pool light died. I took the housing apart and would like to upgrade it to LED lights. Only issue is this model uses 2 MR16 bulbs and not the standard Edison type connectors. Also noticed there is an internal transformer sealed up in the light housing providing 12v power to the bulbs. Always thought the system was 120v since there was no transformer at the junction or control box. If I do find a LED bulb should I get the 12v model? Does the built in transformer of the SAM light defeat or render the GFCI on the 120v side less useful? Should I just throw everything away and get a completely new light system? If so should i get 12v or 120v?