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Old 02-17-2013, 05:10 PM   #1
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Question about replacing light fixture

I'm trying to replace one of our RV ceiling fixtures with one from Lowe's / Home Depot and so far have not been successful. There are two leads coming from the ceiling; white/yellow and white. The leads from the new light fixture are black and white; hooked up black to white/yellow and white to white and get no light. Tried rewiring the fixture I took down and it works. It is operated by a duplex switch and is the only light on the switch. What am I missing and what do I need to do?

Thank you!
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Old 02-17-2013, 05:22 PM   #2
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What is the voltage requirement of the ceiling fixture that you are removing and what is the voltage requirement of the new fixture from Home Depot. It sounds to me that you are installing a 110v fixture on 12v circuit. I don't understand what you mean by this statement. "tried rewiring the fixture I took down and it works".
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Old 02-17-2013, 05:23 PM   #3
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Quote:
Originally Posted by JerryHooper View Post
I'm trying to replace one of our RV ceiling fixtures with one from Lowe's / Home Depot and so far have not been successful. There are two leads coming from the ceiling; white/yellow and white. The leads from the new light fixture are black and white; hooked up black to white/yellow and white to white and get no light. Tried rewiring the fixture I took down and it works. It is operated by a duplex switch and is the only light on the switch. What am I missing and what do I need to do?

Thank you!
What type of lighting? Incandescent? old fixture 12vdc? using original bulb?
Got pics and a Lowes/HD sku
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Old 02-17-2013, 05:35 PM   #4
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Your HR probably has 12 volt lights that runs off the MH batteries. Most anything you buy at HD will be 120 volt AC fixture. You need to purchase a fixture that uses 12 volt DC if you want to use existing wiring. Most likely needs to be purchased at a RV parts store.
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Old 02-17-2013, 05:51 PM   #5
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Your HR probably has 12 volt lights that runs off the MH batteries. Most anything you buy at HD will be 120 volt AC fixture. You need to purchase a fixture that uses 12 volt DC if you want to use existing wiring. Most likely needs to be purchased at a RV parts store.
Well .... not exactly .... a 120vac fixture using a low wattage (low amperage draw) 12vdc bulb is ok. Otherwise, the fixture may need heavier gauge wire from the bulb socket to the tie point of the 12vdc input.

In other words, if the new fixture is 120vac incandescent, and you use a 12vdc bulb like this:
Camco 41313 RV 12V-15W Fluorescent Light Bulb : Amazon.com : Automotive

it works fine. Not extremely bright light though.

Light fixtures that WONT WORK are the ones that come with a gu24 bulb included like this:
Shop Good Earth Lighting 2-Pack 11-1/4-in Oil-Rubbed Bronze Ceiling Flush Mount at Lowes.com

Here's one of mine. Standard screw base 120vac light fixture with one of the Camco low wattage 12vdc bulbs installed.
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Old 02-18-2013, 06:25 AM   #6
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Well .... not exactly .... a 120vac fixture using a low wattage (low amperage draw) 12vdc bulb is ok. Otherwise, the fixture may need heavier gauge wire from the bulb socket to the tie point of the 12vdc input.

In other words, if the new fixture is 120vac incandescent, and you use a 12vdc bulb like this:
Camco 41313 RV 12V-15W Fluorescent Light Bulb : Amazon.com : Automotive

it works fine. Not extremely bright light though.

Light fixtures that WONT WORK are the ones that come with a gu24 bulb included like this:
Shop Good Earth Lighting 2-Pack 11-1/4-in Oil-Rubbed Bronze Ceiling Flush Mount at Lowes.com

Here's one of mine. Standard screw base 120vac light fixture with one of the Camco low wattage 12vdc bulbs installed.
Forgot all about that type fixture. OP needs to check what voltage is on the wires he is trying to connect to.
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Old 02-18-2013, 07:52 AM   #7
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We have changed out several of the light fixtures with ones from Lowe's. The ones in the living room area we were able to use just about anything but the ones for the bedroom we had to do a little more looking as those are a different voltage but we did find the stuff we needed to change them out.
Easiest is to make sure the fixture takes the same voltage bulb as the one you are taking out. You can at the same time change over to LED.
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Old 02-18-2013, 12:51 PM   #8
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We have changed out several of the light fixtures with ones from Lowe's. The ones in the living room area we were able to use just about anything but the ones for the bedroom we had to do a little more looking as those are a different voltage but we did find the stuff we needed to change them out.
Easiest is to make sure the fixture takes the same voltage bulb as the one you are taking out. You can at the same time change over to LED.
Yup ... not hard even without a meter. Pull the bulb out, clean it up so you can read the type, "google". In most cases it's 12vdc. Then you need to find a 120vac fixture you like, open the box, and see what bulb fits it. Then find a 12vdc bulb (you won't find them in HD or Lowes) with the same base as the 120vac bulb that normally fits ... THEN make sure it's available in a low enough wattage to not exceed the necessary amperage to light it. Keep in mind that a 100watt 120vac bulb only uses 1/10 the amperage of a 100watt 12vdc bulb. Therefore, a 120vac fixture usually has a lighter gauge (thinner) wire in the fixture. LED or fluorescent bulbs usually work fine since they require less amperage. All a little tedious but you only need to do it once and order spare bulbs.
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Old 05-27-2013, 11:39 PM   #9
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I have a 12v light fixture with 2 + and 1- on the old fixture there is only 1+ and 1- how do I wire it. Do I put the 2+ on the new fixture to the one coming out of the wall?
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Old 05-28-2013, 12:23 AM   #10
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Check the voltage on your light bulbs before you buy.

I changed two lamps in the bedroom and one over the dinette table and one over the chair next to the entrance door all 12V.
But I perched them from Camping World that way I did not have to worry about the wiring or the light bulbs.

Just a thought.
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