98Z28 w/ 99+ Efilive Roadrunner, questions about using 99+ wiring harness
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As the title explains, I have a 98 Z28, and already have a 99+ roadrunner PCM. Will using a painless underhood wiring harness for a 99+ LS1, will everything hook up and work fine without any issues, or will some of the small harnesses need to be modified?
I'm planning on buying an extended painless harness so I can put the PCM in the glove box for easy access.
Does anyone have any experience swapping a 99+ harness into a 98 car?![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
Thanks for any help,
Matt
I'm planning on buying an extended painless harness so I can put the PCM in the glove box for easy access.
Does anyone have any experience swapping a 99+ harness into a 98 car?
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
Thanks for any help,
Matt
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![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
As the title explains, I have a 98 Z28, and already have a 99+ roadrunner PCM. Will using a painless underhood wiring harness for a 99+ LS1, will everything hook up and work fine without any issues, or will some of the small harnesses need to be modified?
I'm planning on buying an extended painless harness so I can put the PCM in the glove box for easy access.
Does anyone have any experience swapping a 99+ harness into a 98 car?![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
Thanks for any help,
Matt
I'm planning on buying an extended painless harness so I can put the PCM in the glove box for easy access.
Does anyone have any experience swapping a 99+ harness into a 98 car?
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
Thanks for any help,
Matt
You could use the painless 99+up engine harness. You would have to modify the vehicle side of the equation. The 99+up side has two interconnecting plugs the vehicle side has 3. Also, if you use the newer harness you will have to modify the instrument cluster wiring and get a new cluster as well as drop the fuel tank and change out the sending unit.
I can modify your existing 98 harness for 300 shipped to your door. You
would not have to modify the vehicle side- just plug and play. You will have to run a custom efilive operating system to get the fuel gage to work. I can hook you up with that as well. Check out the website for more information.
www.efialchemy.com
Doc