Electrical Help Please

[YoungVetteGuy]

I have been fixing my exhaust and have all the components out....headers and pipes. I needed to pull it out of the garage and it started with no exhaust components on it which was fine....but then the next day it wouldnt start. the battery is fine and i dont think it is the starter:
Symptoms: Turn key and i hear loud click....just one click
the dash then goes completely blank. no lights... nothing.
Then if i then wiggle the neg terminal it all come back on and the process repeats it self...any ideas anyone ill update as i go
If u arc the starter is starts right up and runs fine

 

[boomdriver]

I have been fixing my exhaust and have all the components out....headers and pipes. I needed to pull it out of the garage and it started with no exhaust components on it which was fine....but then the next day it wouldnt start. the battery is fine and i dont think it is the starter:
Symptoms: Turn key and i hear loud click....just one click
the dash then goes completely blank. no lights... nothing.
Then if i then wiggle the neg terminal it all come back on and the process repeats it self...any ideas anyone ill update as i go
If u arc the starter is starts right up and runs fine

Well, sounds like the exhaust fried some wires in the engine bay.What you describe is definately a power/ground connection issue....there is main harness, +battery & grounds all around behind, beside the block. I can think of a real important harness-bundle on the drivers side thats directly opposite where hot exhaust would blow on it without the header in place...Theres alot of damage that can happen to parts not designed to take 300-600 degree doses of exhaust gases shooting directly out of the exhaust port.

 

[vetteoz]

Then if i then wiggle the neg terminal it all come back on and the process repeats it self..

I would be removing the battery terminals , cleaning them and making sure they are tight.The fact that something happens when you " wiggle" them means you have a bad / dirty connection / frayed wired or something not making a good connection.Also check other end of neg wire at it's connection point on engine