C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

wiring help please ...

Thread Tools
 
Search this Thread
 
Old Jul 6, 2009 | 09:00 PM
  #1  
fran68racer's Avatar
fran68racer
Thread Starter
Heel & Toe
 
Joined: Jun 2009
Posts: 16
Likes: 0
Default wiring help please ...

last week i asked for some wiring help and got some ...i thought it fixed the problem..but not ..i just put a 383 crate notor and tremech 5speed in the ole 68 ..i could not get the car to fire ..i was told to remove the yellow wire to the starter and bingo it fired and ran ..over joyed i turned the car off went in and thanked the guy on the fourm for his help went back out and now i do not have spark at the coil...i am running a msd dist and coil the one that came with the dynoed motor ..i have 12 volts at the + side of the coil and 12 voilts at the - side of the coil ..when i turn the car over the - side does not pulse..it only dims ..i called msd they said to run a - wire right to the battery and to the dist ground ..did it nothing ..anyone one out ther have any ideas ...thanks fran
Reply
Old Jul 7, 2009 | 12:09 AM
  #2  
mikey's Avatar
mikey
Melting Slicks
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 1999
Posts: 3,027
Likes: 137
From: Nashville TN area
Default

don't know if C3 is same as C2, but i learned my original '64 dash key switch drops power to the ignition on terminal during cranking. the engine wiring harness routed power to the coil during cranking to accomodate for this column switch "design feature"..

check if you have power at the coil during key "on" before cranking..
Reply
Old Jul 7, 2009 | 10:03 AM
  #3  
fran68racer's Avatar
fran68racer
Thread Starter
Heel & Toe
 
Joined: Jun 2009
Posts: 16
Likes: 0
Default wiring help please ..

thank you for the reply ..i just got off the phone with MSD and they gave me a few things to look at ..i think in the long run it something stupid like 40 year old wiring ...i will check the volts at the coil today and if anyone else has any ideas i am open to em ..thanks again
Reply

Get notified of new replies

To wiring help please ...





All times are GMT -4. The time now is 05:07 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE