C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

MSD ignition adapter help.

Thread Tools
 
Search this Thread
 
Old Mar 19, 2021 | 06:57 PM
  #1  
C.mustain's Avatar
C.mustain
Thread Starter
Cruising
 
Joined: Jan 2021
Posts: 13
Likes: 0
Default MSD ignition adapter help.

Hi, i have a 1990 corvette with an aftermarket MSD ignition system. Just recently i needed to replace the ignition coil and the coil wire. I got the same MSD Blaster 2 and the corresponding wire for the coil. Yet when i was putting the new coil in, the wire needs an adapter to fit into the female plug on the MSD Blaster 2 coil. The adapter, from what Ive seen online, needs to be tightened from the top terminal while in the female plug to make the adapter fit snug. I've seen many people having trouble with this, as i did myself. When i tried to tighten the adapter into the coil it would never tighten. when i try ti tighten the screw the whole screw ends up spinning so it doesn't tighten. The post has a flat head on the coil side and a 7 mm socket on the other end. When you try and tighten with one end by its self it just spins. I dont understand how to make the adapter snug in the socket. Does anyone know a better way to put the adapter in there or another way to fit the wire into the coil. I've ruined the current adapter i have, should i just go and buy another adapter and try again, or is there a better solution. any help is appreciated.
Reply
Old Mar 20, 2021 | 01:10 PM
  #2  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Default

One picture would be worth a thousand words.
Reply
Old Mar 20, 2021 | 01:56 PM
  #3  
Mixednuttz's Avatar
Mixednuttz
Pro
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
2022 C4 of the Year Winner - Modified
Finalist 2020 C4 of the Year - Modified
Default

I'm guessing that you're asking about the coil wire connection at the coil end? (As mentioned above, a picture would be quite helpful here.) You don't need any adapter for that. Get a coil wire with the correct ends or do it yourself and change the coil end connector.

Last edited by Mixednuttz; Mar 20, 2021 at 01:57 PM.
Reply
Old Mar 20, 2021 | 02:00 PM
  #4  
C.mustain's Avatar
C.mustain
Thread Starter
Cruising
 
Joined: Jan 2021
Posts: 13
Likes: 0
Default Pictures





ok so here are pictures of what I'm working with. The adapter, the top of the coil, and the wire end. The adapter is broken, yes. It broke while trying to install.
as I mentioned I'm trying to get the adapter on the the coil. To be able to attach the wire to the coil, to attach the coil to the distributor. I was told this was how you do it.

Last edited by C.mustain; Mar 20, 2021 at 02:03 PM.
Reply
Old Mar 20, 2021 | 04:38 PM
  #5  
Mixednuttz's Avatar
Mixednuttz
Pro
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
2022 C4 of the Year Winner - Modified
Finalist 2020 C4 of the Year - Modified
Default

You could try another adapter or try one of either of these other options: replace the coil end connector on that wire to one like in the (terrible quality thanks to the poor camera on my tablet) picture or you could use another coil. That terminal you have will connect to a Blaster SS coil with no modification.
Reply
Old Mar 20, 2021 | 06:34 PM
  #6  
C.mustain's Avatar
C.mustain
Thread Starter
Cruising
 
Joined: Jan 2021
Posts: 13
Likes: 0
Default

Ok how hard would something like changing the connection on the wire be? And would something like this MSD wire work?
Reply
Old Mar 20, 2021 | 06:53 PM
  #7  
C.mustain's Avatar
C.mustain
Thread Starter
Cruising
 
Joined: Jan 2021
Posts: 13
Likes: 0
Default


And would this work? i don't know if there is really much of a difference between cables besides size. The cable i had and have are 8.5 mm. This kit is a 8 mm kit would that still work fine?
Reply
Old Mar 20, 2021 | 06:54 PM
  #8  
JoBy's Avatar
JoBy
Melting Slicks
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Default

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 20, 2021 | 06:59 PM
  #9  
Mixednuttz's Avatar
Mixednuttz
Pro
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
2022 C4 of the Year Winner - Modified
Finalist 2020 C4 of the Year - Modified
Default


I'm guessing that your cap terminal looks like this? This is an HEI style terminal. That plug wire you pictured would connect to the coil but not the cap. (The opposite problem you've got now, I'm assuming.)
You would need this style connector on the coil end of the wire https://www.holley.com/products/igni...ies/parts/3331
Changing the connector on the wire isn't particularly difficult. You just need patience and a crimper. I make the plug wires for my car as an off the shelf pre-made kit won't work in mine. You have to attach the connector on every wire with one of the universal kits.
I haven't used one of those Power Tower adapters before so I don't have any experience installing one. The coil I use has the HEI style connector on it. (Like the wire you already have.)


Looks like that Taylor wire you pictured has the correct connectors in the kit.

Last edited by Mixednuttz; Mar 20, 2021 at 07:02 PM.
Reply
Old Mar 20, 2021 | 07:03 PM
  #10  
JoBy's Avatar
JoBy
Melting Slicks
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Default

Any of those wires will do as long as they have the correct terminals.
Reply
Old Mar 20, 2021 | 07:21 PM
  #11  
C.mustain's Avatar
C.mustain
Thread Starter
Cruising
 
Joined: Jan 2021
Posts: 13
Likes: 0
Default

Ok thank you, I'm going to get the Taylor wire kit and go that route thank you all!
Reply

Get notified of new replies

To MSD ignition adapter help.





All times are GMT -4. The time now is 03:10 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE