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Old 17 September 2014, 19:11   #1
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Nav light bulb

Pre-season checks on Seawolf produced fzztpop when I switched on the white all round light on top of the A frame. I have no idea what type of light fitting it is, and there don't appear to be any identifying markings on it. The bulb is about the same size as a sidelight bulb in a vehicle, but it has two terminals on the base not one, so I've failed to find one locally (all the similar single filament bulbs in vehicles seem to be a single pin on the base) and I can't immediately see something like it online - but I don't know what you would call the bulb fitting pattern - can anybody advise please?

Secondly, the bulb is only 6 watt, and assuming it is a standard type and I've just missed it so far, I wondered what sort of wattage it is safe to uprate it to to increase visibility. I considered LED, but they seem to have issues too and I don't use it much, so have discounted that. I don't need or want to change the unit, but I wondered how many watts you could safely put in a relatively small fitting, have seen issues with melted Land Rover brake lights over the years with 21w bulbs in something that is a similar physical size, so I'm guessing 10-15w would be about the max?

Pics of the bulb and the fitting attached.

Ta
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Old 17 September 2014, 19:18   #2
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Have Lucas number for you in the morning ... Dual poles were a pita for a single filiament .... mind you Lucas don't exist anymore .. Do Dingbro vans even cover the Falklands ?
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Old 17 September 2014, 19:30   #3
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Er ... prob not!

Thanks!
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Old 18 September 2014, 13:04   #4
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I'd be much more confident in an LED than filament especially if rarely used. What is the current path? Pin>filament>pin?
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Old 18 September 2014, 15:51   #5
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oops sorry forgot .. so I googled "10-15w dual pole" and it came up with this thread .. too many forums pm me for the number if I forget ... cos clocks aint no good between you and me
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Old 18 September 2014, 17:59   #6
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Thanks, I assume the two terminals are connected to the filament and the body is electrically separate but as it is blown I can't be sure.
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Old 18 September 2014, 19:19   #7
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Yeah the 2 terminal are each end of the filament. Body is a ground I recall.
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Old 18 September 2014, 19:19   #8
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If Not using often....

Navi Light 360 deg 2nm

Battery operated, can be used as light when not being used in boat too...

S.
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Old 19 September 2014, 06:12   #9
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Still looking, but I now reckon the fitting is called a BA15D type -

https://www.google.co.uk/search?q=BA...EkQsAQ&dpr=0.9

Have found some 12 watt ones on eBay so hopefully they will turn up!
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Old 19 September 2014, 06:55   #10
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RIBase
eBay? Shouldn't that be MareHarbourBay down there? ;-) (Sorry, that was bad! lol. But happy memories of 6 months down the Falklands).
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