Lost voltage to spark plug coil
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Joined: Oct 2007
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Lost voltage to spark plug coil
1970 big block 454 engine.
I lost the 12-volts feeding the coil and was wondering if anyone know ware the fussable link is located? I see it on my wiring schematic but not sure were it is fiscally located so that I can check if it is good.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends. I also want to replace my coil with a high performance coil. I was told to run E3.40 spark plugs.
Any help or recommendations are appreciated.
I lost the 12-volts feeding the coil and was wondering if anyone know ware the fussable link is located? I see it on my wiring schematic but not sure were it is fiscally located so that I can check if it is good.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends. I also want to replace my coil with a high performance coil. I was told to run E3.40 spark plugs.
Any help or recommendations are appreciated.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
I cant tell you exactly where the fusable link is but I can tell you to OHM the wires and if they spec out.....put them back on. My 69' 427/400 had wires stamped 68' on them and the car ran perfect. These are copper core wires, they never go bad unless corroded....and it is the reason for the sheathing and the ignition shielding as well.
Jebby
Jebby
Tech Contributor
Joined: Jun 2004
Posts: 20,931
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
1970 big block 454 engine.
I lost the 12-volts feeding the coil and was wondering if anyone know ware the fussable link is located? I see it on my wiring schematic but not sure were it is fiscally located so that I can check if it is good.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends. I also want to replace my coil with a high performance coil. I was told to run E3.40 spark plugs.
Any help or recommendations are appreciated.
I lost the 12-volts feeding the coil and was wondering if anyone know ware the fussable link is located? I see it on my wiring schematic but not sure were it is fiscally located so that I can check if it is good.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends. I also want to replace my coil with a high performance coil. I was told to run E3.40 spark plugs.
Any help or recommendations are appreciated.
Is my vette stock?? HAHA
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From: Im not allowed to tell you
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Check for the link down by the starter. I dont see it on the diagram I looked at. There should be 2 power sources to the coil. One during cranking ( key held in start position) and a seperate for when you release the key (run/ on position). Is there 2 wires on your motor? Check for power with the key on. If you have power then its just the wire from the starter to the coil.
https://www.corvetteforum.com/forums...ng-diagram.jpg
https://www.corvetteforum.com/forums...ng-diagram.jpg
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
1970 big block 454 engine.
I lost the 12-volts feeding the coil and was wondering if anyone know ware the fussable link is located? I see it on my wiring schematic but not sure were it is fiscally located so that I can check if it is good.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends. I also want to replace my coil with a high performance coil. I was told to run E3.40 spark plugs.
Any help or recommendations are appreciated.
I lost the 12-volts feeding the coil and was wondering if anyone know ware the fussable link is located? I see it on my wiring schematic but not sure were it is fiscally located so that I can check if it is good.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends. I also want to replace my coil with a high performance coil. I was told to run E3.40 spark plugs.
Any help or recommendations are appreciated.
Jebby
Melting Slicks
Joined: Apr 2007
Posts: 3,189
Likes: 111
From: Tolland CT
1970 big block 454 engine.
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends..
On the same note this coming fall I'm going to replace my coil and stainless steel covered spark plug wires as they are around 25-years old. I was wondering if anyone can recommend a high performance factory look alike spark plug wires that have the same outer stainless steel covering with the grounded ends..
I'm not sure whether you can run a higher voltage coil with the factory wires, seem to recall a note about this.
Check out their video on plug wires.
Last edited by BBCorv70; Aug 10, 2019 at 09:35 AM.
Tech Contributor
Joined: Jun 2004
Posts: 20,931
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
I just replaced my plug wires with a set from Lectric limited. Perfect fit, comes with documentation identifying which wire goes to what cylinder. Some wires are the same length but the length of the shield terminations were different. Overall a better fit than the wires I bought from the dealer in 1992. https://www.lectriclimited.com/vehic...del/65?cat=747
I'm not sure whether you can run a higher voltage coil with the factory wires, seem to recall a note about this.
Check out their video on plug wires.
I'm not sure whether you can run a higher voltage coil with the factory wires, seem to recall a note about this.
Check out their video on plug wires.
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Melting Slicks
Joined: Apr 2007
Posts: 3,189
Likes: 111
From: Tolland CT
ignition system (i.e. MSD ignition system). Use of such may reduce the life expectancy of these wires and will void your warranty".
It's possible these wires aren't able to withstand higher currents over time?
Just wanted to pass on the warning before purchase, or at least check with the vendor.
Last edited by BBCorv70; Aug 11, 2019 at 01:55 PM.
Team Owner
Joined: Sep 2002
Posts: 38,369
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From: California
Make sure your ballast resistor hasn’t slid in its bracket and is shorting a post out on the bracket
Fusible link lines not terribly difficult to find! Unhook the 12 volt battery connection and do conductivity (ohms resistance checks) from point to point with a multimeter! You are looking for an open! Some things have relays and when not powered, they may read open! I doubt it is a fusible link!
Fusible link lines not terribly difficult to find! Unhook the 12 volt battery connection and do conductivity (ohms resistance checks) from point to point with a multimeter! You are looking for an open! Some things have relays and when not powered, they may read open! I doubt it is a fusible link!
Last edited by TCracingCA; Aug 12, 2019 at 10:51 AM.
Safety Car
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
Make sure your ballast resistor hasn’t slid in its bracket and is shorting a post out on the bracket
Fusible link lines not terribly difficult to find! Unhook the 12 volt battery connection and do conductivity (ohms resistance checks) from point to point with a multimeter! You are looking for an open! Some things have relays and when not powered, they may read open! I doubt it is a fusible link!
Fusible link lines not terribly difficult to find! Unhook the 12 volt battery connection and do conductivity (ohms resistance checks) from point to point with a multimeter! You are looking for an open! Some things have relays and when not powered, they may read open! I doubt it is a fusible link!
Last edited by CanadaGrant; Aug 13, 2019 at 12:29 AM.