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Old 03-28-2018, 06:08 PM   #1
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wiring original bluebird dc lights

Hi. I want to keep my bluebird dc lights, and will be switching them to run off my solar battery rather than through the bus's electrical system. So they have one wire going to them, positive. They were ground via a screw into my metal ceiling. I will no longer have a metal ceiling, so for bayonet type lights, can I run normal +- black and white wires to each one and have them plug into the dc panel? Can bayonet type lights have two wires, or should the connection point on the bulb only touch the positive and I need to wire the negative to the metal light box rather than the bulb? They have LED bulbs now, do you need to add a resistor or something to tweak down the 12 volt current? Thank you.
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Old 03-28-2018, 07:09 PM   #2
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Black and white wire sure
plus to the lamp negative to the metal fixtur or the wire that goes to the shell of the lamp
Modern bayonet LED bulbs are plug and play no resistor required.
I have the exact same bus play scary music now
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Old 03-29-2018, 05:21 AM   #3
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You may already know this but just in case...

LED/SMD lights are polarity sensitive but incandescent bulbs are not. When you install the LED lights/bulbs into existing fixtures, you may find that some do not work. This is usually due to the fixture being wired backwards. Easily fixed by switching the wires around (correcting the polarity).

Edit: Oh.. sorry. You said they have LED lights now so this should not be an issue. Back into my hole....
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Old 04-02-2018, 03:46 PM   #4
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Quote:
Originally Posted by JDOnTheGo View Post
You may already know this but just in case...

LED/SMD lights are polarity sensitive but incandescent bulbs are not. When you install the LED lights/bulbs into existing fixtures, you may find that some do not work. This is usually due to the fixture being wired backwards. Easily fixed by switching the wires around (correcting the polarity).

Edit: Oh.. sorry. You said they have LED lights now so this should not be an issue. Back into my hole....
I would encourage you to keep and respect the black-is-ground, white-is-hot convention should you be installing or transplanting incandescent bulbs. It'll keep things easier and more understandable down the line, should you desire to change something. Of course, we never do that here.
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Old 04-02-2018, 03:52 PM   #5
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I would encourage you to keep and respect the black-is-ground, white-is-hot convention should you be installing or transplanting incandescent bulbs. It'll keep things easier and more understandable down the line, should you desire to change something. Of course, we never do that here.
Of course, or even better white/red is hot. That doesn't change when swapping the connections on the fixture though.
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Old 04-02-2018, 04:08 PM   #6
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Thanks for coming out of the hole JDOnTheGo. Lights with LED were briefly tested before I ripped out ceiling and all the wiring - worked then, but who knows when I reinstall. I have figured out AC, but haven't done any DC wiring yet. Lights just have positive going to them, so don't think it is possible to reverse polarity? In terms of wire color, I find my bus uses a wide assortment of colors for hot (and ground) - so I will be consistent with the colors I use in my separate DC and AC system and chart it out for posting in my electronic's cabinet.
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