My 23 has a OEM (Perko) steaming light (new one 2 yrs old). It is the oblong shaped one identical to the stern light. IMHO it a stupid design in that you must disassemble the entire fixture to replace the bulb. Anyway, it worked on and off till I replaced it with the same fixture and guess what, same problem.I have traced the intermittent action to the bulb contacts (whacking the mast fixes the problem for a while till it decides to turn itself off whenever. I attribute it to the "torpedo bulb" design. Anyone who has ever taken one apart knows what I mean. In all fairness I must say that the original stern fixture has never had a problem (go figure).Any suggestions from anyone who is familiar with the fixture? Maybe dialectric grease etc.? I have investigated other fixtures, but they all use the same "torpedo bulb") and there is no sense duplicating the same problem with another Mfgr.I am hoping it is just something obvious I am overlooking.BTW, Don't forget abiut the 4th annual Hunter 23 Nationals at Indian Lake, Ohio in August. Email Mikeepp@mindspring.com for details!