Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

12 mm spark plug wires

Thread Tools
 
Search this Thread
 
Old Dec 12, 2014 | 12:37 PM
  #1  
apetterez's Avatar
apetterez
Thread Starter
|
Road Captain
Joined: Jun 2014
Posts: 653
Likes: 0
From: Whittier ca
Default 12 mm spark plug wires

Why would someone need such large wires? I have 10 mm and thought they are to big. But my buddy says he is buying twistes spark plug wires 12mm. Seems a little expensive (60)....are they just for looks or is there more to it
 
Reply
Old Dec 12, 2014 | 01:35 PM
  #2  
OldEnuf2NoBtr's Avatar
OldEnuf2NoBtr
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2009
Posts: 9,162
Likes: 1,906
From: Doghouse... mostly
Default

Your Buddy just doesn't know what he is doing that's all.
 
Reply
Old Dec 12, 2014 | 01:40 PM
  #3  
Rayvan's Avatar
Rayvan
Cruiser
Joined: Jul 2012
Posts: 157
Likes: 1
From: San Jose California
Default

They won't work any better than stock wires, so yeah. Just for looks...
 
Reply
Old Dec 12, 2014 | 02:00 PM
  #4  
harleycharlie1992's Avatar
harleycharlie1992
Unofficial HDF Chaplain
15 Year Member
Liked
Top Answer: 3
Top Answer: 5
Joined: Dec 2009
Posts: 21,136
Likes: 18,048
From: san diego
Default

I'm running wires from an old 300 amp arc welder. it was a little hard getting that 1/2" wire into the coil, but I really have good spark now!!
 
Reply
Old Dec 12, 2014 | 03:13 PM
  #5  
ShiftyCapone's Avatar
ShiftyCapone
Tourer
Joined: May 2013
Posts: 256
Likes: 2
From: The D
Default

Originally Posted by harleycharlie1992
I'm running wires from an old 300 amp arc welder. it was a little hard getting that 1/2" wire into the coil, but I really have good spark now!!
Because they're from an arc welder...right?
 
Reply
Old Dec 12, 2014 | 04:28 PM
  #6  
loopie's Avatar
loopie
Road Captain
Joined: Apr 2013
Posts: 583
Likes: 4
From: australia
Default

I run the accel coil on plug set up, no wires needed, just for the clean looks
 
Reply
Old Dec 12, 2014 | 04:59 PM
  #7  
harleycharlie1992's Avatar
harleycharlie1992
Unofficial HDF Chaplain
15 Year Member
Liked
Top Answer: 3
Top Answer: 5
Joined: Dec 2009
Posts: 21,136
Likes: 18,048
From: san diego
Default

Originally Posted by ShiftyCapone
Because they're from an arc welder...right?
of course!!
 
Reply
Old Dec 12, 2014 | 06:10 PM
  #8  
skinman13's Avatar
skinman13
Outstanding HDF Member
Veteran: Navy
Joined: Dec 2012
Posts: 2,557
Likes: 235
From: Texas
Default

I am starting to believe that most of the stuff folks are putting on their rides is more about good marketing strategies by the aftermarket industry and less about actual increased performance...
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Dec 12, 2014 | 07:02 PM
  #9  
devilman13xx's Avatar
devilman13xx
Intermediate
Joined: Dec 2013
Posts: 33
Likes: 0
From: fl
Default

i was talking with the guy at J&P and he claimed those were just 8mm wires with extra thick insulation to look fatter.
Not sure if he was correct but i ended up just going with accel ones instead.
 
Reply
Old Dec 12, 2014 | 07:04 PM
  #10  
harleycharlie1992's Avatar
harleycharlie1992
Unofficial HDF Chaplain
15 Year Member
Liked
Top Answer: 3
Top Answer: 5
Joined: Dec 2009
Posts: 21,136
Likes: 18,048
From: san diego
Default

Originally Posted by skinman13
I am starting to believe that most of the stuff folks are putting on their rides is more about good marketing strategies by the aftermarket industry and less about actual increased performance...
people like to fiddle with their bikes, a lot don't know a whole lot about motors/bikes, but still enjoy doing things/modifications. let them, in most cases they don't hurt anything. big wires are not bad, not any better, but it gives them a sense of accomplishment. no harm, no foul. as long as they don't try to install that supercharger/turbocharger combination!!!!
 
Reply



All times are GMT -5. The time now is 06:51 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE