2005 Bigfoot 21RB Porch light wire location? - Fiberglass RV
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Old 06-16-2023, 01:08 PM   #1
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Name: Grant
Trailer: Bigfoot
Canada
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2005 Bigfoot 21RB Porch light wire location?

Hi all, i'm trying to install an inside switch for my porch light on my 2005 21RB but I can't seem to locate the wire so i can splice into it. My suspicion is it is running through the roof but thought maybe someone could lead me in the right direction?

Thank you, Grant.
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Old 06-17-2023, 10:31 PM   #2
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Name: Charles
Trailer: Bigfoot
Georgia
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My 2008 21RB has a inside switch. I wanted to install an illuminated switch so I would not forget that it was on. BF had just run a hot down and a hot back up, but I removed the blocky trim piece over the door (just snap off the buttons that cover the three screws, and remove it.) This will give you decent access to the area where the wires enter from the fridge compartment and allowed me to pull the white ground wire out and splice another wire to it to carry down the door post.

My trailer was equipped with a gas/elect water heater but wiring for the elect was not run to the stove hood, so they put this red illuminated switch on the top of the LH storage cabinet behind the dinette. Terrible place as it was easy to activate accidently. I ran wires and installed illuminated switches in the stove hood to operate the water heater, and had this red rocker switch left over.

You may need to remove the light fixture and tie a string to the wires, and use mechanical fingers to pull the wires back toward the door frame to work with them. it is doable however.

When you reinstall the trim over the door, make sure the screws start in the old holes in the wood structure of the door frame.

I installed new light fixtures on the outside, as mine were very yellowed, so I bought black ones from Amazon and installed them. Black is UV resistant and provides contrast to the white of the trailer. I also replaced the belt molding trim with black to provide contrast. Looks nice.

The light fixture I used for a porch light did not have a switch on it, I didn't want someone to be able to walk up and turn it off. The one on the front, and the one on left rear at the dump area still have switches. I have LED lamps in them. That way if the lamps fail, they are easy to replace, and the fixtures are much cheaper than dedicated LED ones.

Bargman black porch light with switch

Bargman black porch light without switch

Red illuminated rocker switch without the base or bezel

Black base, bezel and rocker switch, the red one will fit in this base and bezel This is essentially the same as the one by the stove that turns on the overhead spot lights above the cabinet.

Sorry, this phone turns the pics sideways and you never know what you are going to get, but that is the switch on the door frame, its hollow inside.
Attached Thumbnails
MOMIII 2 original yellowed porch light vs new light in black.jpg   wtr htr sw move orig elect heat switch.jpg  

Wtr Htr sw move final result.jpg   20230618_010031.jpg  

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Old 06-18-2023, 02:27 PM   #3
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Name: Charles
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Georgia
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Sorry about getting off on a tangent. The power follows the harness down the trailer's left side, around the back of the shower, across the back of the trailer behind the water tank and inside the storage compartment, then forward till it ends up under the fridge where it rises up and then across the fridge compartment running horizontally to the light. You really need to remove the light as as I said, the header trim over the inside of the door frame, then you can look aft to where the wires enter the light fixture.

Being clever with string, mechanical fingers and forceps you should be able to cut the black and add wire to it to run down the door frame to where the switch goes, then either leave the ground alone or carry one down to the switch also, and a second hot back up to the light. On my trailer the fuse supplies the light on the front, the dump station, the rear storage under the bed and then the porch light,nothing else.

It is this circuit that I tapped into to install USB chargers at the front and at the bed. Rocker switch is used to power all forward USB chargers and the socket. This is because the chargers with built in switches, either capacitive ones or domed rubber button ones, draw a certain amount of parasitic power when off, so the rocker switch kills power to everything.

I documented this in a post on the BOCI or Bigfoot Owners Club International Forum.

Charles
Attached Thumbnails
MOMIII 17 LH USB charger and power port.jpg   MOMIII 18 USB chargers mounted on front wall either side of the dinette.jpg  

MOMIII 34 USB charger mounted in rt rear corner above bed.jpg   MOMIII 31 corner trim retained with angle and wago connectors.jpg  

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'03 Ram 2500 CTD, 5.9HO PacBrake six speed std cab long bed Leer top and 2008 Bigfoot 25B21RB.. Previously, 2008 Thor Freedom Spirit 180, SOLD! 2007 Winnebago View 23H Motorhome, SOLD!
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Old 06-18-2023, 02:37 PM   #4
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Couple of more pics.
Attached Thumbnails
MOMIII-33-USB-charger-install-the-the-bed@d44768d09e3342e89e53644149be9008.jpg   MOMIII 19 LH USB charger and power socket.jpg  

MOMIII 20 RH USB charger and rocker switch.jpg  
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'03 Ram 2500 CTD, 5.9HO PacBrake six speed std cab long bed Leer top and 2008 Bigfoot 25B21RB.. Previously, 2008 Thor Freedom Spirit 180, SOLD! 2007 Winnebago View 23H Motorhome, SOLD!
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Old 06-28-2023, 08:44 PM   #5
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Name: Grant
Trailer: Bigfoot
Canada
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Wow Charles, thank you very much for the reply. This is the exact type of information I needed. I thought I had found the correct wire before sending this post but unfortunately it was the wrong one so I had to splice it back together. Anyways now that I have a good lead as to where it is i'll pull that panel and go from there. I've fished so many wires through strange places i'm sure once I find it i'll be able to get it down the cavity in the door.

Thanks again.
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