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12-13-2015, 01:15 PM
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#1
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Junior Member
Join Date: Aug 2013
Posts: 2
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12 Volt System
I'm trying to hook up multi-color LED strip under my awning. The LED strip has a controller that can change the colors. I want to use the 12 volt power supply from the porch light. I connected everything and the lights come on but I cannot change colors. Connected it directly to the house battery and it works. House batteries were at 12.7 volts. Tested the wires at the porch light and they were at 12.2.
Any suggestions?
Thanks!
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12-13-2015, 02:58 PM
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#2
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,925
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The wire for the porch light was only sized to power one bulb, you're trying to run a string of LEDs and a controller. I'd size the wire for the distance and run it directly from the batteries or fuse panel to get adequate current. If you run from the batteries, be sure to install a fuse.
__________________
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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12-14-2015, 09:03 AM
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#3
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,713
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As you are seeing, LEDs are very much voltage sensitive. Even the normal variations in RV power are enough to cause some of those color strips to act whacky. I've found that the most reliable way to power them is via a converter module on a 120v power supply. They also last longer that way.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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12-16-2015, 09:58 AM
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#4
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Junior Member
Join Date: Aug 2013
Posts: 2
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Argh! My back up plan would be to run new wires though the porch light opening to inside the motorhome. Then find another source or create a new connection. I would have like to have the lights connected to the porch light so I can turn them on with the porch light switch.
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12-16-2015, 02:27 PM
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#5
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,975
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What is total amp draw of this product? I doubt the porch light wiring is the problem, most likely the off/on switch is the limiting component. I refer you back to post #2.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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12-16-2015, 03:07 PM
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#6
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Senior Member
Join Date: Jun 2011
Location: FL
Posts: 11,452
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Any chance during the test that you had the led input turned over 180 degrees. There is often a tiny arrow that must match up. This has nothing to do with the input voltage of course.
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Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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12-16-2015, 04:11 PM
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#7
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Senior Member
Join Date: Jul 2014
Posts: 225
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When you say the LED's come on I'm assuming they come on 'white'. I've never looked at these LED strip lights or worked with them so I'm just surmising how they work. To be color changing I suspect they are in individual groups of three (one each red, green, blue). If so and they are on 'white' that would mean all three in the groups are on simultaneously. If so, that would indicate the problem is with the controller and not the lights themselves. As mentioned above, this could be a voltage issue. Did you wire the controller in series or parallel to the porch light? If you wired it in series, the incandescent porch bulb may cause too much of a voltage drop to operate the controller properly. Did the lights seem dim on the porch power compared to the direct battery power?
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