Electrical help needed! - Page 2 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-30-2015, 07:44 AM   #15
Senior Member
 
Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
Posts: 1,045
The trailer lights (running) and the 12 volt interior lights should only be joined (if then) at the ground connection.
My thoughts are that the running lights should be completely separate and have their own ground and be powered from the trailer plug. There is one common and that would be the 12 volts from the TV for trailer power while connected. The grounds would be common of course.
I suggest that the ground connection from the TV pigtail be checked since the trailer power is common to that and the power is common to the trailer power as well.
My thoughts on the matter as I rewire my 16' Scamp is that each power user is wired with two wire cable and the ground is brought back to a common ground buss at my power distribution center. Each circuit group is protected by a circuit breaker and the ground for the TV pigtail is bonded to the frame and the ground buss is separately bonded as well.
In this way each circuit can be checked individually and a failure in one will not affect any other.
__________________

__________________
redbarron55 is offline   Reply With Quote
Old 07-30-2015, 08:04 AM   #16
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
All grounds, both in the TV and the trailer have to be common and bonded. If for no other reason than that the charging line will be compromised if otherwise. For example, it doesn't make any sense to run a heavy charging line and not have an equal sized ground wire.
__________________

__________________
Bob Miller is offline   Reply With Quote
Old 07-30-2015, 08:25 AM   #17
Senior Member
 
Name: None
Trailer: None
None
Posts: 2,730
Quote:
Originally Posted by Brunsy View Post

Obviously I am not an electrician or I probably would have figured this out by know. Any more ideas for me to try tomorrow?

Thanks for taking time to help.
Not necessarily. Electricians wire according to the code and there are standard practices
that most electricians follow. Homeowners or DIYers do things that make no sense to an electrician . Troubleshooting an installation done by a homeowner can be difficult because only GOD knows what crazy thing he has done. Don't get frustrated and just because it did work at one time does not mean it worked correctly or it was safe. You cannot "ASSUME " that the new converter was wired correctly or incorrectly , the problem may lie elsewhere,
When I worked in the trade , I hated trying to straighten out some homeowners mess.
Most of the time it was faster and cheaper to rip it all out and start over !!
__________________
steve dunham is offline   Reply With Quote
Old 07-30-2015, 08:47 AM   #18
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
Personally, you state you're not an electrician..and that's not a problem! BUT, I would consider taking it to an RV repair shop (find a reputable/recommended one if you can). These kinds of problems can cause a fire if you're not careful (shorts).

Just a thought... and be careful!
__________________
Darral T. is offline   Reply With Quote
Old 07-30-2015, 10:04 AM   #19
Junior Member
 
Name: grant
Trailer: 13' burro, 13' casita, 20' nomad f/w
Texas
Posts: 21
your tail lights have nothing in common with the 12 volt system in your trailer, tail light power is supplied from tow vehicle, along with stop/turn and etc. thru the power plug. Now since u have power to the fan thru 2 fuses u probably have both wires from fan hooked to fuse 2/3. which will supply ground thru power source, if u have a meter check for power on both wires going to the fan, if power is present remove wire from either fuse and put it to ground, hopefully this will solve u'r problem, Good luck
__________________
gcssr39 is offline   Reply With Quote
Old 07-30-2015, 10:16 AM   #20
Senior Member
 
Name: None
Trailer: None
None
Posts: 2,730
How does a 2 wire fan run if both wires are hot ?. There would be no difference in potential across the fan motor .If one wire of the fan was hooked to fuse #2 and the other fan wire was hooked to fuse #3 ,both leads to the fan are at the same potential.

*I am assuming you are referring to a 12 VDC circuit and not a 240/480 VAC circuit,
__________________
steve dunham is offline   Reply With Quote
Old 07-30-2015, 10:21 AM   #21
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
I think that the bottom line is in the original title, with a pre-fix added:


On Site Electrical Help Needed


I don't think that this is a problem that can be solved by braille.
__________________
Bob Miller is offline   Reply With Quote
Old 07-30-2015, 10:33 AM   #22
Senior Member
 
Name: Charles
Trailer: Scamp 16
Ohio
Posts: 262
Wiring

!2 DC wiring seems to do some very crazy things when a good "ground" is lost and without looking into it I would say that that might be the problem. The running lights, for example, are not connected in any way to the converter. They do share the same ground.
__________________
cmartin748 is offline   Reply With Quote
Old 07-30-2015, 11:29 AM   #23
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
Quote:
Originally Posted by Bob Miller View Post
I think that the bottom line is in the original title, with a pre-fix added:

On Site Electrical Help Needed

I don't think that this is a problem that can be solved by braille.
---------------------------> <--------------------------
__________________
Darral T. is offline   Reply With Quote
Old 07-30-2015, 11:52 AM   #24
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,030
Send a message via Yahoo to Darwin Maring
A few minutes with a multimeter and all power disconnected and taking Ohm readings should be able to find something interesting.
__________________
Darwin Maring is offline   Reply With Quote
Old 07-30-2015, 12:01 PM   #25
Moderator
 
Name: RogerDat
Trailer: 77 Scamp 13
Michigan
Posts: 3,081
One thing about FG trailers they depend on the ground wire(s). I wonder if the water in the camper is causing OP to look in the wrong location.

Does not the pigtail have a foot in both worlds? Running lights & house power in effect all come together there. Or at the connections to the pigtail that are sometimes just inside the trailer.

I would start testing with a meter at the pigtail plug, with and without tail light and/or fuses that seem to impact symptoms. See if house power and tail light in question have something in common they shouldn't, also the battery is up there acting as the source of power. Might as well start at end with power and just test your way back.
__________________
RogerDat is offline   Reply With Quote
Old 07-30-2015, 12:22 PM   #26
Senior Member
 
David Tilston's Avatar
 
Name: Dave W
Trailer: Trillium 4500 - 1977, 1978 (2), 1300 - 1977, 1973, and a 1972
Alberta
Posts: 5,316
Registry
There are not that many wires in a trailer.

Buy a $10 multimeter. Start at the plug to the tow vehicle, trace out all the wires. Make a circuit diagram while you are at it. Post the diagram. Then we can help.

But after doing that, you probably will figure it out yourself.
__________________
David Tilston is offline   Reply With Quote
Old 07-30-2015, 12:54 PM   #27
Senior Member
 
Name: Frank
Trailer: Casita
California
Posts: 251
My Scamp owners manual has a very complete wiring diagram on the back page. I would suggest that you look at it carefully. It is even in color. Take your time and work backwards from the various lights etc. Look at where each of the two wires go, one wire is power the other is ground. If you don't have the trailer wiring diagram get one from Scamp.
__________________
Frank F
frankcfx is offline   Reply With Quote
Old 07-30-2015, 01:02 PM   #28
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 1,885
Quote:
Originally Posted by frankcfx View Post
My Scamp owners manual has a very complete wiring diagram on the back page. I would suggest that you look at it carefully. It is even in color. Take your time and work backwards from the various lights etc. Look at where each of the two wires go, one wire is power the other is ground. If you don't have the trailer wiring diagram get one from Scamp.
I could not agree more which is why I supplied the link to the wiring diagram in post # 5 and suggested you go over every inch of the wiring. Big job but IMHO it needs to be done.

Frank.. please let me know if the online diagram differs from your printed copy.. thanks
__________________

__________________
gordon2 is offline   Reply With Quote
Reply

Tags
electrical, scamp


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What size battery? and other electrical help needed Nick_B Problem Solving | Owners Helping Owners 8 11-09-2014 06:04 PM
Electrical Wiring work needed Jackie R Modifications, Alterations and Updates 1 10-20-2013 09:43 PM
More electrical updating advice needed Otters Electrical | Charging, Systems, Solar and Generators 18 07-06-2013 12:10 PM
'77 Scamp Electrical Help Needed Otters Electrical | Charging, Systems, Solar and Generators 30 03-17-2013 04:45 PM
Electrical help needed Pam Garlow Problem Solving | Owners Helping Owners 6 11-20-2007 01:35 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.