Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

A little Help? - Error Code 21 left output failure

Thread Tools
 
Search this Thread
 
Old Apr 24, 2007 | 12:43 AM
  #1  
WdGldDave's Avatar
WdGldDave
Thread Starter
|
Road Captain
Joined: Nov 2005
Posts: 593
Likes: 0
From: Central IL
Default A little Help? - Error Code 21 left output failure

OK, I installed a new headlight on my 01 wideglide. Everything was great for several months. Recently I wanted to clean up the front by adding some chrome bolts and covers in place of the stock riser bolts. When I made the change, I capped off the ground wire coming off of the Cobra II headlight that I had previously added. The vendor told me the light would ground itself and didn't need to be wired. Things were fine for a while. Eventually my key indicator light started coming on from time to time. Long story short - now my left turn signal doesn't work. I hooked the grounding cable back up but still have no turn signal. I used TC's directions to check error codes and the code = 21 left output failure. Where do I go from here? I did try to erase the code but the left turn signal still doesn't work. I checked the bulbs already. Any advice will be greatly appreciated.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Andrewnc
Softail Models
4
Jun 27, 2018 07:50 AM
Cozz
Touring Models
3
May 7, 2018 11:31 AM
ddg22
Electrical/Lighting/Alarm
5
Jan 1, 2016 10:25 AM
trainwreak
Electrical/Lighting/Alarm
4
Aug 10, 2009 04:52 PM
WdGldDave
Dyna Glide Models
13
Apr 28, 2007 05:40 PM




All times are GMT -5. The time now is 07:11 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE