this thread harkens back to the days when steve p. would pose these questions. had something come up for the first time last week. I have solved the problem and know the answer- I'll let a few of you guys guess in and i will check in a few days. installed 4 lights on one 12 guage circuit using Volt top dog spots. all spots are located about 100 feet from the trans. 2 lights, for 2 trees about 20 feet apart. each tree has one 20w 24d uplight mounted on ground, and one 35w 20d uplight about 20 feet up in the tree. king connections are made with the 25 foot leads aprox 15 feet apart. 13v tap on trans reads about 13.4. the two ground lights and one tree mounted uplight work fine. all about 10.8- 11.1 volts. the last light reads voltage at socket, 10.9, but upon inserting the light, does not work. check again, reads voltage at socket. reinsert bulb, again, bulb does not light. I checked about 5 things before I found the culprit. anybody guess what the problem was?