what to keep from the main harness on a 4th gen?
#3
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
you will have to get a good regulator from aeromotive that is for efi to carb fuel pressure with a return on it. I pulled most of wiring out except for the ignition to msd box. I kept all the light functions.
#5
11 Second Club
iTrader: (27)
Join Date: May 2005
Location: Your girl's back door giving her the long stroke while you're at work
Posts: 6,801
Likes: 0
Received 3 Likes
on
3 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
You'll need the connector from the alternator. You can trash the engine harness and PCM. A lot of the wires going into the two fuse boxes under the hood can be removed as well.
I didn't touch any of the main body harness and left the body control module, all my power functions still work even the keyless entry
I didn't touch any of the main body harness and left the body control module, all my power functions still work even the keyless entry
#6
Launching!
Thread Starter
iTrader: (3)
Join Date: Oct 2011
Location: Bay View, WI
Posts: 275
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
After reading through smkn ta's old race wiring thread I may just yank everything and do a harness from scratch. That way I can lose weight and clean everything up real good. Only thing is figuring out thehow I'm going to do the damn windows lol.
Trending Topics
#8
Launching!
Thread Starter
iTrader: (3)
Join Date: Oct 2011
Location: Bay View, WI
Posts: 275
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
thats the plan, after searching around some more it definitely will be easier to do it that way. the only factory tie-ins are the external lighting system and the window motors that are ran from a box that I can just do a bit of rewiring on...I started pulling the entire harness out last night and holy crap there is a lot of wires running through these cars! Oh well, all is fair in the pursuit of speed!![Chug! Chug! Chug!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_chug.gif)
do you have pics of how you did yours? Im taking some pointers from the pics I have seen while searching around in the drag section .
![Chug! Chug! Chug!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_chug.gif)
do you have pics of how you did yours? Im taking some pointers from the pics I have seen while searching around in the drag section .
#12
#16
Teching In
iTrader: (1)
Join Date: Mar 2008
Location: WALTON, KY
Posts: 43
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Im in the same boat here. My 95 is gen 2 383 carbureted. I kept the factory headlight wiring, also everything from the fuse box inside. I cut everything from the fuse block outside on driver fender out. Now there is nothing, no power haha. So I hope im thinking correct here, can I just run like a 2 gauge power wire inside from the battery and the take all power source for the fuse box inside (dash) to a distribution terminal to make everything work?
#17
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Im in the same boat here. My 95 is gen 2 383 carbureted. I kept the factory headlight wiring, also everything from the fuse box inside. I cut everything from the fuse block outside on driver fender out. Now there is nothing, no power haha. So I hope im thinking correct here, can I just run like a 2 gauge power wire inside from the battery and the take all power source for the fuse box inside (dash) to a distribution terminal to make everything work?
Here is a link to the schematics I used when I "thinnned out" my harness, #'s 31 and 34 to be exact. Everything works still except the auto hatch release and the power windows, but just because I havent finished it up yet. Ill post up the link for the windows below.
http://shbox.com/1/schematics_wiring.html
Here is how I wired my plug on my alt(which doesnt say anything about a resistor being needed, thats why I asked):
https://ls1tech.com/forums/attachmen...-cs144-alt.jpg
This is how I wired up the battery:
https://ls1tech.com/forums/attachmen...1233334884.jpg
and this is the way to get your windows to work:https://ls1tech.com/forums/attachmen...-309310954.jpg
I had my Lq4/th400 in and running (off of my red top), just didnt have time/money to finish everything up last summer. I am HOPEFULLY gonna have it put back together and out before I go back to work in late April, at least that is what Im really pushing for.......
![Chug! Chug! Chug!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_chug.gif)
#19
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I believe so. Im in NC on vacation and the car is in WI, so I just cant walk out and take a quick look. Here are a couple more links that I found, but cant seem to find the exact link that I got that pic from........
https://ls1tech.com/forums/drag-raci...k-w-o-bcm.html
https://ls1tech.com/forums/drag-raci...itch-deit.html
https://ls1tech.com/forums/drag-raci...k-w-o-bcm.html
https://ls1tech.com/forums/drag-raci...itch-deit.html
#20
Teching In
iTrader: (1)
Join Date: Mar 2008
Location: WALTON, KY
Posts: 43
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Thanks for the info! I got lucky, the main power wires that feed the fuse block inside was not cut from the harness and I was able to hook everything back up. I did have to trace the wires for the fog lamps to work, very thin white & purple (seperate wires) I connected them together and they now stay on with the stock fog lamp switch. Just fyi to anyone doing the same thing.
Thanks again!
Thanks again!