Bigfoot B17 Wiring - Page 2 - Fiberglass RV
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Old 10-16-2023, 09:20 PM   #21
Junior Member
Name: John
Trailer: Bigfoot 17B
British Columbia
Posts: 12
Problem Solved

I found a cut wire in the Power Converter on the 12 Volt side. It was the original white common lead. Fixed it and all works now.
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Old 01-01-2024, 11:41 AM   #22
Junior Member
Name: Kelly
Trailer: Trillium 5500
Posts: 18
Bigfoot B17 wiring

Originally Posted by Scouter Dave View Post
I have searched and will continue to do so but....

Does anyone have a wiring diagram for 1984 Bigfoot B17 Camper?

Trailer is wired for an extra battery [on the tongue, front of propane tanks]. It also has a water pump, break away brake connector as well as the usual LT, RT, Running lights.

The 7-pin plug on the trailer is wired as follows:
1 - white - ground
2 - blue - right turn
3 - green
4 - black
5 - red - left turn
6 - brown - running lights ???
7 - yellow

Thanks in advance... Scouter Dave
Yellow is for backup lights. I believe the black is power to the battery. Blue is for your brakes. If you found blue elsewhere, trace it back. It’s likely a piece of wire jumped into the correct color wire. Do you have to do a complete rewire?
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Old 01-01-2024, 11:55 AM   #23
Junior Member
Name: Kelly
Trailer: Trillium 5500
Posts: 18
Bigfoot electrical- battery charging

Originally Posted by SOCK MONKEY View Post
This is what every diagram on the internet shows. Blue should not be a turn signal,,ever

I have a 91 and all I did was plug it into my 99 Z71 and everything seems to work,, except the battery charging so I'm looking on this forum for possible answers.
But I'll agree that there is no such thing as wiring diagrams for any of the older models. I thing this is possibly true of most trailers. The wiring is pretty simple in one reguard but the charging system is not so simple...
Hiya, if your trailer is anything like ours, the electrical panel is an older one and only provides for the 12v system. In ours, the battery charging wasn't connect from the tow vehicle, it was attached to a battery charger that was plugged into a 120 outlet under the drivers front bench seat of the dinette.
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Old 01-01-2024, 12:34 PM   #24
Junior Member
Name: Kelly
Trailer: Trillium 5500
Posts: 18
Bigfoot Manual with useful data.

Originally Posted by WaltP View Post
As far as I've been able to learn, BF has never provided good owners' manuals with electrical, mechanical, and plumbing layouts/schematics. The few so-called owners manuals I've seen have been little more than advertising brochures.
I have no way to verify this, but I've been told when the bank shut them down in 2008(?) all documentation was burned/destroyed. That seems bizarre to me, but I guess it might as well be true since nothing useful seems to be available. And many owners have tried.

I'd be overjoyed to be proven wrong on all this.

I've got an old one with good information in it. I just checked and there is a copy of it listed under electrical in the documents section of this site.
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Old 01-01-2024, 01:54 PM   #25
Junior Member
Name: Kelly
Trailer: Trillium 5500
Posts: 18
30 amp main fuse for 12v can shut down your system

Originally Posted by John Meier View Post
Hey Francois (and fellow Bigfooters), I appreciate the diagram of the Power Converter you posted. I have a 1992 B17 and none of the 12V circuits are working. As in your pic, I metered each of the 12V coloured wires terminated in the Converter and they all read 12V. I also get 12V+ across the main power and common wires (black and white) in the Converter. All fuses are good plus I metered them while they were plugged in and again showed the 12V on each side of the fuse..
I am wondering if maybe somehow the white (common) is cut somewhere - although not a single one of the fused items work.
I have disabled the battery connection and are just using the 110V Converter. I just purchased the Bigfoot and the battery was marginal so I disconnected it and focused on the Power Converter/Charger piece.
Any thoughts?
Did you check the 30amp fuse under the drivers side front bench seat? It should be a glass fuse on older trailers. it is in the front inside corner and goes between the converter and the battery.
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Old 01-06-2024, 10:53 PM   #26
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CharlesinGA's Avatar
Name: Charles
Trailer: Bigfoot
Posts: 395
There are two different color schemes for 7 way Bargman plugs and harnesses.

One is very common, the other not so much but could be encountered. If the trailer plug and umbilical is wired to the trailer correctly it will work fine when plugged into the vehicle, no matter the color scheme.

'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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