LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

wiring on a lsx swap..on a 3rd gen

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Old Feb 14, 2010 | 09:58 PM
  #1  
candy burple rs's Avatar
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From: hollywood maryland (st. mary's county)
Car: 87coupe,91RS Camaro's, 00 Suburban
Engine: LSX427HO w/D-1SC and intercooler
Transmission: RPM Tremec T-56 Magnum
Axle/Gears: DTS 12bolt, 3.42
wiring on a lsx swap..on a 3rd gen

I have a wiring deal with the factory plug on the Alternator(3rd gen). I recieved a 06 Alternator plug from a vendor but the wires were so small, compared to the 3rd gen camaro..wiring....
The wire that leads out of the alternator goes to the starter and then back to the fuse block...
Can I go smaller on that wire or should I stay factory...the new wire is..18 gauge verse the 10 gauge....
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Old Feb 15, 2010 | 09:36 AM
  #2  
Pocket's Avatar
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Car: 91 Trans Am
Re: wiring on a lsx swipe..on a 3rd gen

What alternator are you using? Wiring between the two are completely different and not interchangable

LSx should be 20ga (red) wiring, 3rd gen 12ga (red) and 18ga (brown or tan/wht)

LSx alts are regulated by the PCM. 3rd gens have a 12v battery connection and share the 12v side with the fan fuse
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Old Feb 15, 2010 | 10:04 AM
  #3  
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From: Niagara Region Ontario Canada
Car: this and Dodge Dakota Quad
Engine: 383 tbi
Transmission: 700 R4
Axle/Gears: 3-73
Re: wiring on a lsx swipe..on a 3rd gen

pocket is correct, never go smaller on wires your going to have a fire issue or constant fuse blow out. many other issue if wrape into other systems
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Old Feb 15, 2010 | 10:48 AM
  #4  
candy burple rs's Avatar
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From: hollywood maryland (st. mary's county)
Car: 87coupe,91RS Camaro's, 00 Suburban
Engine: LSX427HO w/D-1SC and intercooler
Transmission: RPM Tremec T-56 Magnum
Axle/Gears: DTS 12bolt, 3.42
Re: wiring on a lsx swipe..on a 3rd gen

ok so very good on the wire size...thanks....
So how should I wire in the alternator, its a 06 corvette alt.
and believe it is 145amp deal...I have the alternator with Mast Motorsports
for the engine build...so I can run the 1 main wire to the stud on the back of the
alt. and the other two????
I was wondering if I could pull the pins and put them in the new clip....
The computer I will be using is a 90m programmable....I had a obd 1 computer with the ramjet.....
So can you explain..thanks
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Old Feb 15, 2010 | 01:48 PM
  #5  
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From: NC
Car: 91 Trans Am
Re: wiring on a lsx swap..on a 3rd gen

Not sure, how many pins are on the connector, what locations and what colors

The output lug on the back of the alt gets hooked into the battery wiring just like any alt

No idea how to connect them to a non LSx PCM, you may have to wire it like a carb setup

http://www.ls1tech.com/forums/conver...aq-thread.html

Here is stock Fbody single wire setup
http://www.lt1swap.com/pictures/14_c..._oil_level.gif
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Old Feb 15, 2010 | 05:51 PM
  #6  
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From: Niagara Region Ontario Canada
Car: this and Dodge Dakota Quad
Engine: 383 tbi
Transmission: 700 R4
Axle/Gears: 3-73
Re: wiring on a lsx swap..on a 3rd gen

big wire goes to the starter one goes to the iginition and the other goes to accessroies

for a video head to this weeks powerblock 4x4 the just did a realy good episode on rewireing a car and spent alot of time on this subject



[q0uote=candy burple rs;4436717]I have a wiring deal with the factory plug on the Alternator(3rd gen). I recieved a 06 Alternator plug from a vendor but the wires were so small, compared to the 3rd gen camaro..wiring....
The wire that leads out of the alternator goes to the starter and then back to the fuse block...
Can I go smaller on that wire or should I stay factory...the new wire is..18 gauge verse the 10 gauge....[/quote]
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Old Feb 15, 2010 | 06:00 PM
  #7  
candy burple rs's Avatar
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Joined: Jun 2004
Posts: 92
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From: hollywood maryland (st. mary's county)
Car: 87coupe,91RS Camaro's, 00 Suburban
Engine: LSX427HO w/D-1SC and intercooler
Transmission: RPM Tremec T-56 Magnum
Axle/Gears: DTS 12bolt, 3.42
Re: wiring on a lsx swap..on a 3rd gen

hey pocket....heres some picks..I believe I can just change them...meaning go from the 3rd gen male connector....into the 4th gen male...I wish i could figure out the picture deal to get them on here

Last edited by candy burple rs; Feb 15, 2010 at 08:01 PM.
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Old Feb 15, 2010 | 08:40 PM
  #8  
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From: NC
Car: 91 Trans Am
Re: wiring on a lsx swap..on a 3rd gen

Ample wiring threads are already written here and they are specific to 3rd gens

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