dual plug coils ??
Thread Starter
|
Stage IV
Joined: Sep 2012
Posts: 4
Likes: 0
From: Connecticut
dual plug coils ??
I have a 66 shovel engine with dual plug heads.. i also have a mallory electronic "distributor" and a set of dyna 3-ohm green coils.Mallory suggests using 2-4 ohm coils...no more than 5 ohm total..so if i tie the 2 coils together do i get 6-ohms of resistance ??? the coils came off of a dual-plug shovel so would anyone know if i could safely use them or do i need to buy a new set ??? I also have the original "circuit breaker" distributor...would these coils work with that ??? if not than exactly what are these coils for ??? Thanks..
Intermediate
Joined: Mar 2008
Posts: 37
Likes: 2
No doesn't work like that,,,A 3 ohm coil is used for a fully electronic ignition,(dyna 2000,,twin tech,,compu fire) A ignition similar to a dyna S or vulcan still has an advance weight system,,they want 5 ohms same as points..You can run 5 ohm with that timer for street use,,,3 ohm for race...The 3 ohm coils will heat up when running for a long distance ...When wiring coils for single fire dual plug,,you have to consider wiring in parallel or series,,,I'm not sure if that timer can do single fire,,,The Vulcan unit can fire single or dual,,3 or 5 ohm..
Dave
Dave
Stage III
Joined: May 2020
Posts: 3
Likes: 0
From: Courtenay
Hi TwiZted Biker,
I am hoping you can share some of your expertise please.
I have a Shovelhead dual plug dual coil dual fire. I am looking for a simple wiring diagram.
It is a custom chopper that only has headlight, tail light, brake light, ignition.
I have headlight, tail light, brake light working, power to the coil just not sure the wiring of the coils. Not where wire from the points connects, but have power to the points. Maybe that isn't very clear, but I am stuck and would appreciate any advice.
Thank you!!!!
TooBlue
I am hoping you can share some of your expertise please.
I have a Shovelhead dual plug dual coil dual fire. I am looking for a simple wiring diagram.
It is a custom chopper that only has headlight, tail light, brake light, ignition.
I have headlight, tail light, brake light working, power to the coil just not sure the wiring of the coils. Not where wire from the points connects, but have power to the points. Maybe that isn't very clear, but I am stuck and would appreciate any advice.
Thank you!!!!
TooBlue
Stage III
Joined: May 2020
Posts: 3
Likes: 0
From: Courtenay
Looking for Help
I am hoping you can share some of your expertise please.
I have a Shovelhead dual plug dual coil dual fire. I am looking for a simple wiring diagram.
It is a custom chopper that only has headlight, tail light, brake light, ignition.
I have headlight, tail light, brake light working, power to the coil just not sure the wiring of the coils. Not where wire from the points connects, but have power to the points. Maybe that isn't very clear, but I am stuck and would appreciate any advice.
Thank you!!!!
TooBlue
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
Likes: 3,361
From: Cental, MI
Hi TwiZted Biker,
I am hoping you can share some of your expertise please.
I have a Shovelhead dual plug dual coil dual fire. I am looking for a simple wiring diagram.
It is a custom chopper that only has headlight, tail light, brake light, ignition.
I have headlight, tail light, brake light working, power to the coil just not sure the wiring of the coils. Not where wire from the points connects, but have power to the points. Maybe that isn't very clear, but I am stuck and would appreciate any advice.
Thank you!!!!
TooBlue
I am hoping you can share some of your expertise please.
I have a Shovelhead dual plug dual coil dual fire. I am looking for a simple wiring diagram.
It is a custom chopper that only has headlight, tail light, brake light, ignition.
I have headlight, tail light, brake light working, power to the coil just not sure the wiring of the coils. Not where wire from the points connects, but have power to the points. Maybe that isn't very clear, but I am stuck and would appreciate any advice.
Thank you!!!!
TooBlue
Two 3 ohm coils wired in Parallel will give something less than 3 ohms total... while 2, ea. 3ohm coils wired in series will result in 6 ohms... just right for the typical Dyna-S type ignition... so... wire two of the dual tower 3 ohm coils in series..
that is 12v on one coil and triggers to the other one... coils tied together in to out...
Trending Topics
Stage III
Joined: May 2020
Posts: 3
Likes: 0
From: Courtenay
I know you did not ask me but... easy ****...
Two 3 ohm coils wired in Parallel will give something less than 3 ohms total... while 2, ea. 3ohm coils wired in series will result in 6 ohms... just right for the typical Dyna-S type ignition... so... wire two of the dual tower 3 ohm coils in series..
that is 12v on one coil and triggers to the other one... coils tied together in to out...
Two 3 ohm coils wired in Parallel will give something less than 3 ohms total... while 2, ea. 3ohm coils wired in series will result in 6 ohms... just right for the typical Dyna-S type ignition... so... wire two of the dual tower 3 ohm coils in series..
that is 12v on one coil and triggers to the other one... coils tied together in to out...
Thank you! Everything was running perfectly before I took it apart for this rebuild. I have points. The two coils are wired in series. I have 12V at the points but no spark at the points. It could be a condenser problem was another thought...
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
a ground issue can cause no arc in the points
try rotating the engine till the points are for sure closed - then ground a test light and the point end open the points only using the arm of the point contact - see if it lights it should
try rotating the engine till the points are for sure closed - then ground a test light and the point end open the points only using the arm of the point contact - see if it lights it should
Thread
Thread Starter
Forum
Replies
Last Post