Trailer right turn / stop not working
Laughing Gas
Joined: Feb 2003
Posts: 998
Likes: 23
From: Tennessee
Do you have the trailer ball on the hitch ball? Did the truck come with a trailer tow package? The reason I ask is you could have a grounding issue.
Thread Starter
|
Senior User
Joined: Aug 2005
Posts: 103
Likes: 0
i had some trailer work done
went to pick up...hooked up and kicked on lights and flashers
everything was good except for right rear turn only
i inquired...they brought out their battery thing and hooked up trailer to it
kicked on running lights and left and right turn then brake
all functioned properly
then he had a plug he hooked up to my truck with lights...it showed right rear stop/turn not working
i looked and only found one fuse for the trailer stop/turn and two relays (one for each side)
I'm going to try switching the relays to see if problem migrates or stays put
never knew if these relays ever went out
Laughing Gas
Joined: Feb 2003
Posts: 998
Likes: 23
From: Tennessee
I was typing on iPad and its painfully slow so i'll elaborate more here
i had some trailer work done
went to pick up...hooked up and kicked on lights and flashers
everything was good except for right rear turn only
i inquired...they brought out their battery thing and hooked up trailer to it
kicked on running lights and left and right turn then brake
all functioned properly
then he had a plug he hooked up to my truck with lights...it showed right rear stop/turn not working
i looked and only found one fuse for the trailer stop/turn and two relays (one for each side)
I'm going to try switching the relays to see if problem migrates or stays put
never knew if these relays ever went out
i had some trailer work done
went to pick up...hooked up and kicked on lights and flashers
everything was good except for right rear turn only
i inquired...they brought out their battery thing and hooked up trailer to it
kicked on running lights and left and right turn then brake
all functioned properly
then he had a plug he hooked up to my truck with lights...it showed right rear stop/turn not working
i looked and only found one fuse for the trailer stop/turn and two relays (one for each side)
I'm going to try switching the relays to see if problem migrates or stays put
never knew if these relays ever went out
Thread Starter
|
Senior User
Joined: Aug 2005
Posts: 103
Likes: 0
Manual has loc 20&21 in power dist box 2 relays and loc 34 is 25a mini fuse for both
Trending Topics
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
Okay.
Can you feel each relay click (fingertip) with the left and right turn signals? If not, the problem is between the SJB and the relay box, assuming the truck's signals work correctly.
Did you swap the relays? Did it change anything? If the problem swapped sides, it's a bad relay. If not, it's a wiring issue somewhere between F34, the relay socket, and the rear trailer adapter outlet. Corrosion in some of the connectors in the rear of the truck has been known to be a problem.
Can you feel each relay click (fingertip) with the left and right turn signals? If not, the problem is between the SJB and the relay box, assuming the truck's signals work correctly.
Did you swap the relays? Did it change anything? If the problem swapped sides, it's a bad relay. If not, it's a wiring issue somewhere between F34, the relay socket, and the rear trailer adapter outlet. Corrosion in some of the connectors in the rear of the truck has been known to be a problem.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Fords to Drive Before You Die
Joe Kucinski
3 Best / Worst Features Of The 2025+ Ford Expedition
Brett Foote
10 Ways Ford is LOSING to the Competition
Joe Kucinski
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
Thread
Thread Starter
Forum
Replies
Last Post
Rocksetter
1983 - 2012 Ranger & B-Series
3
Sep 3, 2010 10:21 AM