Softail Models Standard, Custom, Night Train, Deuce, Springer, Heritage, Fatboy, Deluxe, Rocker and Cross Bones.
Sponsored by:
Sponsored by:

Tach install

Thread Tools
 
Search this Thread
 
Old May 25, 2021 | 12:14 PM
  #1  
Gil-V's Avatar
Gil-V
Thread Starter
|
Novice
Joined: Mar 2021
Posts: 15
Likes: 4
From: Santa Barbara
Default Tach install

Installed Drag Specialties 3 wire tach on 2011 Fatboy Lo. Instructions said to attach the signal wire to neg side of coil, I was just wondering if anyone knows if there is a signal wire/plug under the gas tank instrument panel?

Thanks,
 
Reply
Old May 25, 2021 | 01:22 PM
  #2  
Tampa Fatboy's Avatar
Tampa Fatboy
Seasoned HDF Member
Joined: Feb 2012
Posts: 13,456
Likes: 10,452
From: Sunshine State
Default

Signal wire is usually black and connects to the negative of coil, to allow tach to 'sense' engine speed.
 
Reply
Old May 25, 2021 | 01:37 PM
  #3  
Gil-V's Avatar
Gil-V
Thread Starter
|
Novice
Joined: Mar 2021
Posts: 15
Likes: 4
From: Santa Barbara
Default

Thank you Tampa Fatboy. I'll mess with it this weekend.
 
Reply
Old May 26, 2021 | 05:10 AM
  #4  
eighteight's Avatar
eighteight
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,908
Likes: 7,533
From: OH
Default

FWIW
`99 RK PINK signal wire under console, part of the harness that feeds speedo.
May not apply to your model
 
Reply
Old May 26, 2021 | 02:22 PM
  #5  
Tampa Fatboy's Avatar
Tampa Fatboy
Seasoned HDF Member
Joined: Feb 2012
Posts: 13,456
Likes: 10,452
From: Sunshine State
Default

I would want my tach wire to the ignitionn aa one continous run with no splice nor connection point. Food for thought but then again, I'm old school
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
leafman60
Touring Models
6
Feb 1, 2021 06:27 PM
REW13
Electrical/Lighting/Alarm
5
Jan 10, 2019 11:37 AM
Thierry
Ignition/Tuner/ECM/Fuel Injection
6
Feb 24, 2011 02:11 PM
ericsenf
Dyna Glide Models
7
Nov 19, 2007 09:11 AM
abw121
Ignition/Tuner/ECM/Fuel Injection
4
Sep 1, 2006 12:35 PM




All times are GMT -5. The time now is 11:05 PM.

story-0
10 Most Awkward-Looking Motorcycles Ever Built

Slideshow: Not every motorcycle can be a design icon, and these machines prove that bold styling doesn't always age gracefully.

By Verdad Gallardo | 2026-06-18 10:29:31


VIEW MORE
story-1
Jason Momoa Is Turning Classic Harleys Into PHEVs

Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.

By Verdad Gallardo | 2026-06-10 17:18:58


VIEW MORE
story-2
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-3
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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