The base doesn't look right to me on the 23427. The pool store suggested two GE gy6.35 http://www.gelighting.com/apo/produc...halogen/06.htm but the pins are too small (both in the diameter of the actual pins and the distance between the pins).

The light was sitting out on the pool deck for about 6 months (at least) while the house was vacant. It's possible some of the corrosion happened then; however it's interesting you mention that because I assumed water in the cubby hole the light goes into would be OK. I take it I must drain the pool down below the light level when I put the new bulb in (and keep the seal on the cover water tight)?


For smaller versions of those photos you can click at the top of the page where it says "medium" or "small" etc.