Wiring..

[aarolar]

I am dreading the wiring on this project, the thread about the guys not starting has me confused and worried at the same time. How much splicing do I have to do when I send off my harness to have it remade and what exactly do they do to it when the "remake" it?

[NITROUS]

I spliced about 5-6 wires to get mine running and the wires were all at the C100 connector on the firewall except for the altenator wire which I also extended off the factory 97 battery cable.

[aarolar]

That doesn't sound all that bad but some of these posts make it sound like rocket science.

[NITROUS]

It's not, just get access to alldata and you can get weather pack connectors from the auto parts store to keep it all plug and play. Study your factory harness well and mark everything you cut at the C100 and roll the wires up for a possible later use but cap them off with some heat shrink.

[aarolar]

It's not, just get access to alldata and you can get weather pack connectors from the auto parts store to keep it all plug and play. Study your factory harness well and mark everything you cut at the C100 and roll the wires up for a possible later use but cap them off with some heat shrink.

From the C100 how do I know what they all go to? Isint that the dash stuff?

[ChevyLee]

That doesn't sound all that bad but some of these posts make it sound like rocket science.

It gave me a heart attack to think about all of it. Then i see how easy it is and wish i could have done it my self, but my stupid neighborhood. anyway just don't snip any wires until you got it all running. thats when you can start cleaning house a little.

[NITROUS]

Yep, like Chevy Lee says, roll them up for later. Most everything is run through the C100 and PCM but depending on you're relays and fuses the wires can be cut before and after the factory fuse box. I eliminated the factory A/C relay and pcm fuses and added an external fuse box with A/C, electric fans and pcm fuses just because I made a plug and play mini harness to plug into the factory LS1 harness. With Nelsons harness it should be a breeze I still want one to play with.

[aarolar]

Yep, like Chevy Lee says, roll them up for later. Most everything is run through the C100 and PCM but depending on you're relays and fuses the wires can be cut before and after the factory fuse box. I eliminated the factory A/C relay and pcm fuses and added an external fuse box with A/C, electric fans and pcm fuses just because I made a plug and play mini harness to plug into the factory LS1 harness. With Nelsons harness it should be a breeze I still want one to play with.

You lost me....

BTW your engine bay is my desktop and motivation for this project!

[LSXmyford]

Honestly, after dealing with my brothers situation, I think if it were to be done over, he/we woulda just done the wiring ourselves. Lost less to it than you would think.

So you ask, if its so easy why are you participating in the "why wont it start thread"? Honestly, I jumped in mid stream and trying to figure out who did what didnt come easily.


If you do opt for the popular vendor aftermarket harness and plan to run LS1 fans, request a longer harness.

Haynes/chilton manuals have wiring diagrams in the back.

[NITROUS]

While you have everything out go ahead and stck a transmission oil cooler in and make your brackets for electric fans. The LS1 fans work great!