About to wire my 7-way connector - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-03-2015, 07:59 AM   #1
Member
 
Name: John
Trailer: Casita
Colorado
Posts: 48
About to wire my 7-way connector

Greetings all,

I am about to wire in and install my brake controller, to include the 7-way connector at my hitch. We don't have a trailer yet but am wondering if I should bother with hooking up the purple/aux wire to the reverse/backup signal at my tow vehicle tail lights. What other possibilities exist for the use of the aux signal?

Any recommendations for this?

Thanks in advance.

John
__________________

__________________
jaevans is offline   Reply With Quote
Old 09-03-2015, 08:29 AM   #2
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
I'd have to ask why you WOULDNT want to hook up the backup lights. Wait until you arrive at a campsite AND/OR home at night and have to back in and you will regret not having them working. I'd rather not have my TOW b.u. lights working than my trailer. It's hard enough to back as it is. And if you're HAVING to back up at night without lights.... well... I dont know of ANY other purpose anyone would be using the wire for.

Dunno what advice others will give, but from nearly 6 yrs of pulling my Scamp, I can advise you to hook up ALL the lights!! I have a cam that looks out the back window of my Scamp and the backup lights are enough to aid me with the camera...another addition I HIGHLY recommend for ANY travel trailer.
__________________

__________________
Darral T. is offline   Reply With Quote
Old 09-03-2015, 09:13 AM   #3
Member
 
Name: John
Trailer: Casita
Colorado
Posts: 48
If the majority of fiberglass trailers have backup lights, then yes, that is the route I will take. It just seems odd to me that a ton of references show this as not being connected at the tow vehicle connector.
__________________
jaevans is offline   Reply With Quote
Old 09-03-2015, 09:16 AM   #4
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
Older rv's may not. But I have a 2010 13' Scamp and I made sure they were on there when I ordered and wouldnt want to be without them. Anyway, if I was hooking up another 7-pin and even if I knew my trailer did NOT have bu lights, the wire would still be there in case the next one I own did.

But that's just my preference and opinion. And on these forums, opinions differ as much as buttercups and garlic!!
__________________
Darral T. is offline   Reply With Quote
Old 09-03-2015, 09:24 AM   #5
Member
 
Name: John
Trailer: Casita
Colorado
Posts: 48
It is only a little extra work running a wire from the backup circuit and if I discover any conflicts down the road with any trailer, I will have installed a bullet connector so it is easily disconnected - another easy solution.
__________________
jaevans is offline   Reply With Quote
Old 09-03-2015, 10:00 AM   #6
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
Not sure what other "conflicts" you could run into unless someone has pulled away from a "standard" hookup on a trailer. Maybe others know where this has happened and have used the wire for something else. I'd be afraid of it. It's a backup wire and that's that. To me, that would be like a trailer reversing the signal lights or something.... I'd make my trailer line up with the 7-pin standard personally.
__________________
Darral T. is offline   Reply With Quote
Old 09-03-2015, 10:03 AM   #7
Senior Member
 
Larry C Hanson's Avatar
 
Name: Larry H
Trailer: Trillium
Arizona
Posts: 303
Hello,

My Trillium has after market LED backup
lights installed. They are great for after
dark trailer parking. I would hook up
the wire. If you get a trailer without the
lights they are an relatively simple install
and worth the effort.

Larry H
__________________
Larry C Hanson is offline   Reply With Quote
Old 09-03-2015, 11:13 AM   #8
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
I want to make sure we're all on the same page here. There are TWO wires that he could technically be talking about: The "aux" wire which to me could be the 12V wire that keeps the onboard RV battery charged. Then there's the backup wire.

jaevans: Look at my wiring layout that comes on the Scamp and see if this is matching what you're hooking up at your 7-pin socket on your tow vehicle. Notice the CENTER of this 7-pin is for the backup. If it's the other, the "aux" as you call it, it COULD be used to charge your trailer. Look at it and we'll go from there...

https://www.flickr.com/photos/50351683@N08/9728844401/
__________________
Darral T. is offline   Reply With Quote
Old 09-03-2015, 11:30 AM   #9
Senior Member
 
Carol H's Avatar
 
Name: Carol
Trailer: 22' Airstream Formerly 16' Scamp
British Columbia
Posts: 11,731
Registry
Quote:
Originally Posted by jaevans View Post
Greetings all,

I am about to wire in and install my brake controller, to include the 7-way connector at my hitch. We don't have a trailer yet but am wondering if I should bother with hooking up the purple/aux wire to the reverse/backup signal at my tow vehicle tail lights. What other possibilities exist for the use of the aux signal?

Any recommendations for this?

Thanks in advance.

John
Not sure what vehicle you are having the 7 pin installed on but in many/most cases the shop doing the install will use a pre made/manufactured wiring harness for that vehicle to do the job and tap into what ever wiring the auto manufacture pre wired at the factory - many cases its nothing more than a 4 pin hidden behind a rear light or in the truck someplace. If the installer uses a pre made wiring harness the aux wiring will most likely be on it so not likely there is anything to be saved in not hooking it up.
Carol H is offline   Reply With Quote
Old 09-03-2015, 10:08 PM   #10
Senior Member
 
Name: bill
Trailer: 2013 Escape 19
North Carolina
Posts: 497
+1 Depends on the tow vehicle. My Honda Element has a four wire trailer kit that is plug and play. Vehicle is prewired for it, easy to install.

Meanwhile, my 2010 F150 is prewired with both a seven wire plug and a four wire plug. Really nice setup. They also had trailer brakes as a factory option, original owner did not spring for that. So I will be installing the OEM trailer brake controller, its plug and play too, but part of the dash has to be removed to install it.
__________________
thrifty bill is online now   Reply With Quote
Old 09-04-2015, 08:53 AM   #11
Member
 
Name: John
Trailer: Casita
Colorado
Posts: 48
Quote:
Originally Posted by Carol H View Post
Not sure what vehicle you are having the 7 pin installed on but in many/most cases the shop doing the install will use a pre made/manufactured wiring harness for that vehicle to do the job and tap into what ever wiring the auto manufacture pre wired at the factory - many cases its nothing more than a 4 pin hidden behind a rear light or in the truck someplace. If the installer uses a pre made wiring harness the aux wiring will most likely be on it so not likely there is anything to be saved in not hooking it up.
I installed the hitch, 4-way wiring, transmission fluid cooler, and power steering cooler, as I will the brake controller and wiring. Our 2004 Honda Pilot had a wiring harness and connector for a 4-way to which I only had to connect a 4-way adapter. I will now only need to wire to the backup lights and run a 10-gauge cable for 12V and the brake controller signal to the engine compartment and then connect to the controller under the dash.

I've already run the cable while visiting a hobby shop with a lift. The rest I should be able to do this weekend with breaks.

john
__________________
jaevans is offline   Reply With Quote
Old 09-04-2015, 10:15 AM   #12
Senior Member
 
Name: Darral
Trailer: Scamp Standard 13' 2010
Tennessee
Posts: 1,443
For what it's worth John, www.etrailer.com has some excellent information, parts AND vids on cabling and installation of these 7-pins, controllers etc.
__________________
Darral T. is offline   Reply With Quote
Old 09-04-2015, 10:19 AM   #13
Member
 
Name: John
Trailer: Casita
Colorado
Posts: 48
Quote:
Originally Posted by Darral T. View Post
For what it's worth John, Trailer Hitches & Vehicle Accessories (800)298-8924 has some excellent information, parts AND vids on cabling and installation of these 7-pins, controllers etc.
Thanks Darral,

That's where I purchased all the parts and kits That may actually be my source of earlier confusion as they don't use the purple backup light wire.

I am good to go though with the project.

John
__________________
jaevans is offline   Reply With Quote
Old 09-05-2015, 12:48 PM   #14
Member
 
Name: John
Trailer: Casita
Colorado
Posts: 48
HAHA - now I know why etrailer omitted the purple wire connection to the backup light signal. The tail lights are in the rear columns in my 2004 Honda Pilot. The backup lights are in the tail hatch. So the wires run up inside the hatch to the top/hinge and connect internally to a harness. I'd have to pull the headliner (I think) to access the harness.

I will ping folks on the Piloteer's forum and see if anyone else has done this. Worse case, I could run a wire along side my 12v and brake signal 10-gauge cable to the engine compartment and connect to the backup signal there but I am hoping there is an easy way.

Thought you'd all enjoy this.

John
__________________

__________________
jaevans is offline   Reply With Quote
Reply


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
7 way plug to 4 way plug back to 7 way plug immrbill Problem Solving | Owners Helping Owners 3 08-10-2015 12:08 PM
Blue wire on 7 pin connector shows 12v all the time ? Mikeny Towing, Hitching, Axles and Running Gear 5 04-20-2008 03:11 PM
Yellow wire on 7 pin connector ? Mikeny Towing, Hitching, Axles and Running Gear 2 04-13-2008 02:22 PM
Yellow wire on 7 pin connector ? Mikeny Problem Solving | Owners Helping Owners 0 12-31-1969 07:00 PM
Blue wire on 7 pin connector shows 12v all the time ? Mikeny Problem Solving | Owners Helping Owners 0 12-31-1969 07:00 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 07:08 AM.


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