ZR-71

I finally finished my starting bypass fix. I really took my time to make sure I did it right. And I'm glad I did because when it was completed, there was absolutely no modification (cutting or splicing) to the stock wiring. In fact the car can be put back to complete original condition in about 30 minutes if you so choose.
Basically what I did was remove the Start Delay Relay and disconnect the connector to the clutch switch and then wire into them. What I mean is I connected a new Yellow wire into the base where the relay goes and a Red wire into the clutch switch connector with those new wires going to a new relay I put under the ECM. I basically followed Crabs "Dreaded No Start Fixed" thread (Thanks Tom ) except I ran a couple of the wires to different spots.

http://forums.corvetteforum.com/c4-z...hopefully.html

The new relay has four wires connected to it. Besides the two I mentioned above, there is a Ground and another one that comes from the Battery. I connected the one for the battery down below the ECM and behind the Battery

http://i48.photobucket.com/albums/f2...1/DSC00561.jpg

Here is what it looked like before I installed it. Note it uses an inline fuse (30A) and male/female terminal connections which is what I used on all the wires.

http://i48.photobucket.com/albums/f2...1/DSC00553.jpg

The pic below shows the backside of the relay base. The new Yellow wire plugs into the other side using a male connector. Plug into one of the lower connections as the very top one is the one that goes to the clutch switch and will NOT have the needed 12v (It only gets 12v when the start delay relay is installed and activated)

http://i48.photobucket.com/albums/f2...1/DSC00559.jpg

Every time I started to cut the Purple wire that goes to the starter, I cringed. I hated to cut anything. While I was connecting the new Yellow wire under the dash, I saw a Purple wire which I realized was the one that goes to the starter. So I decided instead of cutting the Purple wire in the loom next to the ECM, I'll just connect to it at the clutch switch connector. Note the flat shiny connector

http://i48.photobucket.com/albums/f2...1/DSC00558.jpg

Here is the new Red (Purple) connected to it

http://i48.photobucket.com/albums/f2...1/DSC00562.jpg

I ran the new Yellow and Red wires under the driver's door loom

http://i48.photobucket.com/albums/f2...1/DSC00557.jpg

To protect them, I used the normal automotive wire covering and wrapped black electrical tape around it where it runs under the loom

http://i48.photobucket.com/albums/f2...1/DSC00560.jpg

Before I tried starting the car, I connected everything up to the new relay except the Red (Purple) wire and took voltage measurements to make sure everything was as it should be. Then I connected the last wire and barely touched the starter switch to make sure I heard the starter. Then I hit the switch again and she fired right up

If anybody thinks I've done something wrong, let me know. I don't think the start delay relay needs to be there as all it does is feed the 12v to the clutch switch. Also if anybody suspects their only problem is the clutch switch, you can simply jumper across the existing yellow and purple wires on that clutch switch connector and not touch the start delay relay.

Maybe this method I used will allow anyone not wanting to do this bypass because of wire cutting, try it, knowing they can later go back to normal wiring if they want to

A.J.R.

Thanks ZR-71,


Great post and pics. I like the 30A inline fuse and your install is a lot cleaner and less noticeable than mine. However, I completed the mod before seeing this. I too cringed before cutting the purple wire. Cut it anyway while following jaymitchell01 method of installing relay close to the battery and not messing around with the yellow wire or anything else under the dash, found on Crabs thread "dreaded no start" from 2006.



Haven't driven enough yet to know if problem is solved or not.