C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

harbor freight trailer wiring problem

Thread Tools
 
Search this Thread
 
Old Jun 7, 2010 | 08:53 PM
  #1  
RDnomorecobra's Avatar
RDnomorecobra
Thread Starter
Drifting
15 Year Member
 
Joined: Jun 2009
Posts: 1,305
Likes: 8
From: Chester Springs PA
Default harbor freight trailer wiring problem

installed as follows according to eTrailer.com video instructions as well as several threads on here ...

spliced yellow, brown, white into like colors from left tail light.
ran green to right side and spliced into green from right tail light.

everything works except when I press the brake, left side trailer light goes bright and right side trailer light goes completely off.

any ideas?
Old Jun 7, 2010 | 09:10 PM
  #2  
Carcass's Avatar
Carcass
Drifting
 
Joined: Feb 2007
Posts: 1,793
Likes: 7
From: Santa Maria Ca.
Default

Check the ground on the right side trailer light.

(I'm assuming you mean the if the taillight is on when you step on the brake,it goes out too)

Loose grounds do funny things.
Old Jun 8, 2010 | 08:34 PM
  #3  
RDnomorecobra's Avatar
RDnomorecobra
Thread Starter
Drifting
15 Year Member
 
Joined: Jun 2009
Posts: 1,305
Likes: 8
From: Chester Springs PA
Default

yes, if the taillight is on, it goes out when I step on the brake. If it is not on, it lights when I apply the brake, but is dimmer than the left. I will check ground connections tonight. thinking maybe I should get a set of LED taillights.
Old Jun 8, 2010 | 10:36 PM
  #4  
RDnomorecobra's Avatar
RDnomorecobra
Thread Starter
Drifting
15 Year Member
 
Joined: Jun 2009
Posts: 1,305
Likes: 8
From: Chester Springs PA
Default

i sanded down the connection at the trailer tongue and used a ring connector, and ran a ground on the car side to a ground connection on the car's frame. cleaned that one also. I previously had spliced in the ground from the trailer into the black ground at a left tail light. I still have the same problem. I will try it attached to my truck tomorrow. I just have to pick up an adapter for the 7-pin on my truck to connect to the 4 pin on the trailer. that'll tell me if it's the trailer's harness or the car.
Old Jun 8, 2010 | 11:00 PM
  #5  
johninar's Avatar
johninar
Drifting
20 Year Member
 
Joined: Jul 2002
Posts: 1,869
Likes: 0
From: Maumelle AR
Default

It's a bad ground. When ground is unavailabe current flows through both filaments to reach ground.
Old Jun 11, 2010 | 11:27 AM
  #6  
RDnomorecobra's Avatar
RDnomorecobra
Thread Starter
Drifting
15 Year Member
 
Joined: Jun 2009
Posts: 1,305
Likes: 8
From: Chester Springs PA
Default

well it's not the car side of the equation. Same thing when connected to my truck. it's either a bulb or ground on the trailer. I went over the ground wire .. I think I will pick up a bulb and replace it and go from there.
Old Jun 11, 2010 | 05:13 PM
  #7  
$$$frumnuttin''s Avatar
$$$frumnuttin'
Tech Contributor
20 Year Member
 
Joined: Aug 1999
Posts: 16,376
Likes: 404
From: Should this thoughtful, valuable contribution meet with no acknowledgement or 'thanks' this post----
Default

hmmmmm....off topic maybe????
Old Jun 11, 2010 | 11:12 PM
  #8  
Tact's Avatar
Tact
Former Law Dawg Moderator
Supporting Lifetime Gold
20 Year Member
St. Jude 20 Year Donor
Liked
Top Answer: 1
 
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
Default

Try in OT......but definitely not C5 related.

Get notified of new replies

To harbor freight trailer wiring problem

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski




All times are GMT -4. The time now is 01:05 PM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE