Help With Stand Alone Harness Conversion

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May 25, 2015 | 09:54 AM

Dale002

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Help With Stand Alone Harness Conversion

Is there a thread showing how to do this for dummies? I seen a ton of different thread showing pieces for different application but no one complete thread.
I have a 1998 LS1 harness with t56. I need to make it a stand alone. I have removed the wires that are not needed using the pin out chart. I need help with the rest. How to wire and make the relays box for the fans and fuel pump, connecting to 12v power and so on.

May 25, 2015 | 09:59 AM

350SS

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http://lt1swap.com/wiringharness.htm

May 25, 2015 | 10:22 AM

alocker

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Buy this. It comes with basic instructions but really makes the process much easier.

current performance *(non sponsor link removed)

Last edited by speedtigger; May 29, 2015 at 07:11 AM. Reason: Non sponsor link removed

May 26, 2015 | 12:04 PM

zamora7

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make sure you use a 98 pcm, or repin your harness for 99-02 pcm.

May 27, 2015 | 09:56 PM

Dale002

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Quote:

Originally Posted by zamora7

make sure you use a 98 pcm, or repin your harness for 99-02 pcm.

I have the original pcm with the engine.

May 28, 2015 | 02:16 PM

98trans-am

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used lt1 swap for my conversion and fired up on the first try and no check engine lights.
label maker saves a lot of trouble too.

May 28, 2015 | 02:46 PM

goatnipples2002

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You could try diyautotune's site they have some diagrams.

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May 29, 2015 | 06:25 PM

zamora7

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Ive read so much bad stuff about current performance, so watch were you make your purchases

May 29, 2015 | 06:28 PM

#10

zamora7

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Quote:

Originally Posted by Dale002

I have the original pcm with the engine.

Just go through lt1swap site, pretyy much all pinks go on switched 12v, depending how many of them are try not to have too many into one, there might be one or two orange ones that will need constant power. Make sure you label so you dont forget what wires you still have left.