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10-16-2019, 02:05 PM #1
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Need help installing dimmer switch
We have a 2020 GD Reflection 230rl
I would like to install a dimmer switch to the LED light in the dinette slide out. I am attaching what I purchased as well as a photo of the existing wiring. Since the existing wires coming out wall are the same color (white and purple) we are perplexed. Can any of you electric wizards shed some light for us? Thanks!
2020 Grand Design Reflection 230RL
GMC Sierra HD 2500 Duramax
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10-16-2019, 10:20 PM #2
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- Oct 2015
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- Springfield, Oregon
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One is 12v and one is not. A volt meter will tell you the answer.
Backpacker and tent camper all my life, including BSA as a kid and adult.
Motorcycle trips across the USA with a tent - 1978 to Present.
02-10-2005 - 2002 F350 SWD PSD and 2003 Citation 10'8S mostly for Crater Lake Ski Patrol.
10-29-2015 - 2016 Grand Design 380TH. It's HUGE compared to a camper.
10-19-2018 - traded truck for a 2016 Ram 3500 DRW Laramie CC 4 X 4 Long Box.
03-16-2019 - Traded Momentum for a New 2018 374TH-R Solitude
FULL TIME RV'er Nov 2021
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10-16-2019, 10:49 PM #3
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- Mar 2017
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- Pearland, TX
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The switch may have +12V on one wire and the other wire going to the light to give it the +12V when the switch is in the On position.
The ground for the light may be in the wall or near the light.
Here's one post on adding a dimmer: https://www.mygrandrv.com/forum/show...l=1#post177562- Gene
Kim & Gene
2015 Reflection 317RST
2017 Ram 3500 CC LB 4x2 6.7 CTD AISIN 3.73 DRW Auto Level Rear Air, BD3, Prodigy P3, Aux Tank
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10-18-2019, 08:36 PM #4
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- Sep 2018
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- Washington state
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Inside the wall somewhere is another wire!
What you have is +12V source and the other goes to the light.
Your ground/negative is the one hidden in the wall. The white wire on the dimmer goes to that.Rick
2019 Reflection 150 273MK
2015 Ford F350 CC SB Lariat Powerstroke
PullRite Superglide
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10-23-2019, 12:34 PM #5
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- Jul 2019
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- Massachusetts
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I'm looking at making this change. Is there a way to remove the existing switch without damaging the paneling?
- Neil
2020 Reflection 295RL
2019 Ford F250 XLT 6.7L Powerstroke Diesel
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10-23-2019, 06:21 PM #6
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- Sep 2018
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- Washington state
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Of course!
The cover of most wall switches pops off to reveal the screws holding everything to the wall. The dimmer usually needs a larger hole but has a larger cover.Rick
2019 Reflection 150 273MK
2015 Ford F350 CC SB Lariat Powerstroke
PullRite Superglide
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10-24-2019, 01:00 PM #7
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- Mar 2019
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- Redding CA
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Ok, we found the ground wire. We had the dimmer all installed, everything worked but had to cut a larger hole in the paneling. When we went to reconnect everything NOTHING worked. Does a red light appear in the fuse box if a fuse has blown to indicate which fuse?
I sure wish I went to electric school. Makes one feel so very incompetent. I have a medical background which doesn’t mean a darn thing with RV DIY projects!
2020 Grand Design Reflection 230RL
GMC Sierra HD 2500 Duramax
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10-24-2019, 04:06 PM #8
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- Washington state
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Yes your fuse is blown. Either something isn't quite right in the assembly, or you cut into the wires making the bigger hole.
Good news is that fuses are cheap and that 12V doesn't kill people and rarely starts fires.Rick
2019 Reflection 150 273MK
2015 Ford F350 CC SB Lariat Powerstroke
PullRite Superglide
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10-24-2019, 04:23 PM #9
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Thank you EVERYONE! We finally accomplished this modification but I’m not sure I’ll manage to get hubs to do another one[emoji6]
We also struggled with installing a shower hot water mixer and after nearly 2 days..... we have a mixer installed and a dimmer switch. I’m a happy camper!
Sent from my iPad using Tapatalk Pro
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10-24-2019, 04:24 PM #10
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- Mar 2019
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- Redding CA
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Hub Savers - Thoughts on this new...
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