How To: 4 Wire LS Wiring Harness Conversion, Part 2

In part two we begin modifying wires in order to make the wiring harness fit differently on the engine as the computer is being relocated from its original factory location. Power wires and grounds are dealt with, and we show how to modify the factory truck injector connections to work with an LS1 intake and injectors.

Wiring Harness Pinout: http://lt1swap.com/99-02_vortec_pcm.htm

Category:

Autos & Vehicles

Tags:

• Wiring
• Harness
• LS
• Modification
• mod
• ls1
• ls2
• ls3
• lm7
• lq4
• lq9
• 4.8
• 5.3
• 6.0
• 6.2
• camaro
• firebird
• trans
• am
• 55
• bel
• air
• bel-air
• 56
• 57
• 1955
• 1956
• 1957
• chevrolet
• chevy
• pontiac
• 1967
• 1968
• 1969
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• 69
• swap
• restomod
• lsx
• custom
• installation
• engine
• racing

[kingcity510]

Oh yea I forgot I'm planning on doing a ls2 swap on a 77 firebird

[kingcity510]

I'm kind of confused. So are you going to send the pcm to get programed? Also how are you powering the coils? One last thing what about the gauges? Would it be possible to use mechanical gauges for speedo?

[skeeter5283]

Great job guys, I did my own harness three times due to water damage at PCM. I've since moved it into my cab. I wanted to suggest a solder torch, along with flux, makes a lot faster connection. Just FYI. Awesome quality vid.

[mistrgoodwrench]

Thanks for posting this! I had resigned myself to paying someone to modify the harness for my LS1/4L60E install into my '36 Chevy. After watching this, I think I'll tackle it myself!

[revn57chevy]

did you use all four of the o2 sensors? im building a 5.7 turbo motor and i have a 2000 ta harness but ill be useing a wide band o2 LM1 so i was just wondering what you did with the o2s thanks very good video lots of info

[markit8dude1]

Great video- very helpful. where are you guys located?