How to run the Vulcan Gothic Spike Coil Set?

Energy One

SuperNova

Member
I know a few of you guys run this because I did a search, but my question involves the wiring part of it. How exactly do you wire this because the picture does not show the back of the Vulcan for wiring. If stock BD's have the single coil with 3 wires (05 and up) and you go to 2 Coils, how are you wiring that? Pictures for reference...

Ist Picture shows the back of the stock Mount & Coil setup with the 3 Wires (#15)

2nd Pic shows the Vulcan setup Front View only.

So does 1 wire go to the 1st coil, and another goes to the 2nd coil? And then obviously 1 wire for ground? I wish you could see the back of this thing in pictures.....

Any help is greatly appreciated!
 

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Jersey Big Mike

100K mile club
I know a few of you guys run this because I did a search, but my question involves the wiring part of it. How exactly do you wire this because the picture does not show the back of the Vulcan for wiring. If stock BD's have the single coil with 3 wires (05 and up) and you go to 2 Coils, how are you wiring that? Pictures for reference...

Ist Picture shows the back of the stock Mount & Coil setup with the 3 Wires (#15)

2nd Pic shows the Vulcan setup Front View only.

So does 1 wire go to the 1st coil, and another goes to the 2nd coil? And then obviously 1 wire for ground? I wish you could see the back of this thing in pictures.....

Any help is greatly appreciated!
Actually on the BDM setup the red wire is 12V and the other 2 small wires (front/rear) are grounded when coil fires.
The Vulcan setup should have 3 connectors per coil, one for the 12v, one for the ground to fire the coil. and third to the spark plug.
So wire one side of each coil to 12V, use the other connectors for front and rear as normal.
 

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SuperNova

Member
Actually on the BDM setup the red wire is 12V and the other 2 small wires (front/rear) are grounded when coil fires.
The Vulcan setup should have 3 connectors per coil, one for the 12v, one for the ground to fire the coil. and third to the spark plug.
So wire one side of each coil to 12V, use the other connectors for front and rear as normal.
Correct, so if the Vulcan has 3 connectors per coil but I only have 3 Wires, do you split the wires using a splitter for each wire? Im confused sorry
 
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JohnBoy

Active Member
You are just going to make a jumper for the red hot wire to go coil to coil like Mike's drawing. Then front cylinder wire to front coil back cylinder wire to back coil and your plug wires.
 

SuperNova

Member
You are just going to make a jumper for the red hot wire to go coil to coil like Mike's drawing. Then front cylinder wire to front coil back cylinder wire to back coil and your plug wires.
Awesome! And where does the module power come from? Thank you for clarifying!
 

Jersey Big Mike

100K mile club
Awesome! And where does the module power come from? Thank you for clarifying!
Ignore that, just get 12v to the coil -- the module power is the ignition module that on your setup already has power wired to it.
It's shown so that it's clear that that is really switched power -- there's no 12v until key on. Jump the wire to both coils and use the front rear wires to trigger that coils and you are good to go.
 
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Jersey Big Mike

100K mile club
To be perfectly clear.
From the BDM wiring take the red wire and wire to both cylinders.
take the blue wire to the rear cylinders coil
take the yellow wire to the front cylinders coil.

As long as you have the correct ohm coils, you'll be good to go.
 

Little-Boo

Well-Known Member
Troop Supporter
I used to have that system on my 06 Mastiff. These coils used are single fire coils. If you need more information let me know. The way they are wired is jump the two center posts to red and run the red wire to the module for power. The other two one blue for the rear cylinder and one yellow for the front cylinder. Just like Big Mike said. I figured I'd take a pic of what I took off of mine, hope this clears up any questions you may have. I used a H-D Sportster key ignition for a long time then I when put the new EHC and Harness back on, I didn't want to butcher up new harness so I went with the stock ignition. I also have extra Single fire coil that are new, except that I painted them Black cherry as mi Mastiff. I am not trying to sell them, however if you get in a bind I may be able to help you out.

Carlos
 

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SuperNova

Member
I used to have that system on my 06 Mastiff. These coils used are single fire coils. If you need more information let me know. The way they are wired is jump the two center posts to red and run the red wire to the module for power. The other two one blue for the rear cylinder and one yellow for the front cylinder. Just like Big Mike said. I figured I'd take a pic of what I took off of mine, hope this clears up any questions you may have. I used a H-D Sportster key ignition for a long time then I put the EHC new back on, Harness and all and I didn't want to butcher up new harness so I went with the stock ignition. I also have extra Single fire coil that are new, except that I painted them Black cherry as mi Mastiff. I am not trying to sell them, however if you get in a bind I may be able to help you out.

Carlos
That is exactly what I was looking for!! Thank you so much!
 
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