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Old 11-26-2012, 08:59 PM   #15
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Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 17,917
Originally Posted by Steve Ownby View Post
There are no 12 VDC fluorescent tubes. The fixtures in our coaches have a "ballast" that inverts the 12vdc to the voltage the bulb can use.
Originally Posted by Gary RVRoamer View Post
Get the scoop on what? 12v fluorescent bulbs? There is no such thing.
Yes, you are both correct, the ballast adjusts the voltage to the proper rating for the intended bulb. It is more at start up than after it is 'warmed up.' I was sort of joking about using a 120 v bulb in a 12 v fixture, but the underlying idea still might be correct, just because the bulb fits the fixture doesn't necessarily mean it's the proper rated bulb for the ballast. Electronic ballasts, with no external 'starter' use different bulbs than fixtures with external starters.

Ordering from Fleetwood is probably best for the OP to get the proper bulb. Other way would be to track down the manufacturer of the fixture and see what bulb they listed. Remember, he already replaced them with Lowes bulbs, so perhaps the numbers on the bulbs aren't the proper ones.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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