I'm having a problem with these cabinet lights. There's 5 of them with 20 watt MR11+C lamps connected to a 150W/12V electronic transformer, that keeps cycling off and on. The lights are about 20' away from the xfmr fed with 16/4 speaker wire used in parallel.

As a comparison I connected 4 of the 20W lamps directly to a Malibu 200W/12V landscape xfmr. The xfmr gets very hot and the lamps are burning out.

Anyone have experience with this?