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Old 01-07-2019, 10:16   #1
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Bay15d LED issue

Hey guys,

Need some help here. Iíve replaced all my bulbs with LEDís and not one of them work! 12v, bay15d socket, and theyíre all proper LEDs, not knock-off el cheapos. Iíve checked all terminals / sockets and thereís 12.6-13V getting in ok.

Anyone else have this issue?

N
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Old 01-07-2019, 10:19   #2
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Re: Bay15d LED issue

Try reversing the polarity of the connections.
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Old 01-07-2019, 10:20   #3
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Re: Bay15d LED issue

Try reversing the polarity.
I ran into the same problem, instead of wiring everything backwards I bought LEDs from Marine Beam, which work with correct polarity.
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Old 01-07-2019, 10:24   #4
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Re: Bay15d LED issue

Quote:
Originally Posted by kenbo View Post
Try reversing the polarity of the connections.
Oh I forgot to mention, the bay15d are an offset bulb, so they only go in one way. Or do you mean chop the pos/neg wires and rewire them in reverse?

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Old 01-07-2019, 10:31   #5
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Re: Bay15d LED issue

Before you chop anything, try taking a bulb out and touching 12 v across the bottom terminals both polarity ways, to see if you get any light.
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Old 01-07-2019, 10:32   #6
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Re: Bay15d LED issue

Yes reverse the wiring on one as a test
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Old 01-07-2019, 12:02   #7
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Re: Bay15d LED issue

I was used to automotive types 1156 and 1157 before getting the trailer boat. Those use a grounded shell and one or two positive contacts for the filaments.

The boat uses single filament bulbs with a double contact base, non-grounded shell for the nav lights.






Good explanation here: https://www.bulbamerica.com/pages/wh...ay15d-base1157

The dual contact LED bulbs I got from Superbriteleds.com do not seem noisy for the radio frequencies or picky as to which contact is which.

Yes, test the bulb outside the socket first, then in one socket, and go from there. Or take the bulb out and spin it around 180 degrees and replace to see it if is polarity-sensitive.

A BAY15D socket will not provide ground to a BA15D bulb & vice versa.

The interior lights in my boat were all aftermarket non-marine stuff that uses 1141/1156 type bulbs -so nothing confusing about that, right?
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Old 02-07-2019, 00:12   #8
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Re: Bay15d LED issue

Thanks guys. Turns out it was a polarity issue so Iíve ordered a set of polarity agnostic bulbs. Appreciate all your advice!

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