trailer wiring - need help - Ford Powerstroke Diesel Forum
6.0L Problems Forum Having Trouble? Post here

LinkBack Thread Tools Display Modes
post #1 of 2 Old 11-26-2012, 07:25 AM Thread Starter
Compression Ignition Addict
jeeplj8's Avatar
Join Date: Jan 2011
Posts: 292
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
trailer wiring - need help

so the problem starts with...
installed a LED light bar on back of truck. I used the 4 pin plug that was included into the 4 pin plug under the 7 pin on the receiver. intermittent connection, in the process of jiggling it one wire comes out of the back of the factory 4 pin connection. I cut it off completely and stripped wire back as far as the wiring pigtail would allow and still have room for connectors, the wire was black inside the insulation on 2 of the 4 wires. Got it wired up, all worked fine.

fast forward a couple weeks. installed some new LED lights on travel trailer and drove about 450 miles, mostly at night, all worked great. heading back and turn on lights, no trailer running lights (all other functions work fine.) I check, and the 20 amp fuse listed as trailer running lights is blown. replace it, blows again. uh oh.

Start looking over trailer, cannot find any shorts etc. look at LED bar, again, so sign of shorts.

Replace fuse one more time - does not blow - but have very low voltage to trailer lights. now I start thinking maybe it is a ground. Am about 60 miles from home, decide to limp it on home with barely lit running lights, but other functions fine. go 2 miles, no more running lights. fuse is NOT blown. check voltage at trailer plug - 0.

Replace fuse, just in case, nothing. check all other fuses, nothing blown. replace relay, nothing. I am getting no voltage at trailer plug.


05 F250 King Ranch crew cab - bone stock for now, new to me April 2013, 56K miles
05 Volvo S60R, 300+ hp and AWD
09 Audi A4 Qautro 2.0T, AWD and 30 mpg!
06 Malibu LSV Wakesetter, 383 stroker
13 Coachmen 320BHDS - 10K lake house on wheels
81 Jeep CJ-8 (in progress); 5.7 HEMI; LJ (extended) frame, 3.5 RE lift, flatty fenders
jeeplj8 is offline  
Sponsored Links
post #2 of 2 Old 11-26-2012, 09:38 AM
Compression Ignition Addict
Join Date: Dec 2008
Location: port arthur texas
Posts: 4,222
Thanks: 1
Thanked 66 Times in 62 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Wire somewhere disconnected at a connection or finealy broke in two where it was shorting out.

Lord I shall lead them to the water but I will not try to make them drink
dannyboy950 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome