Ls3 Standalone Wiring Harness Diagram

The primary wires are 16 gauge with 12 gauge for heavy draw items such as the headlights.

Ls3 standalone wiring harness diagram.

The larger wires that feed heavy draw circuits are typically 14 to 12 gauge. Psi standalone wiring harness har 1071 is a complete plug and play harness designed for your 2008 2015 ls3 6 2l engine using a 6l80e 6l90e auto trans. Speartech also provides ecm programming including e38 e67 e40 e92 ls lt engine wiring harness reworks and conversion adapters and programming. All psi harnesses are made in the usa.

Here we learn how to modify the original equipment l99 or ls3 e38 ecm engine harness to work with a t56 six speed transmission ending in a three wire hook up. They are completely plug and plays with only 4 wires switched power constant power and ground connections. These harnesses include the gen ii lt1 lt4 gen iii 24x ls1 ls6 and vortec truck engines as well as gen iv 58x ls2 ls3 ls7 vortec and gen v lt ecotec3 engines. Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions.

All of these options from re pinning your original wiring harness to purchasing a complete standalone operating system come with different individual costs and level of complexity. The wire in painless performance kits runs a little larger than the standard. We offer ls lt swap harnesses for all gen 3 4 and 5 ls lt engines including ls1 ls2 ls3 ls6 ls7 lsa ls9 gen 5 v8 lt1 lt4 lq4 lq6 l99 vortec variants dod vvt afm. All psi harnesses are made in the usa.

We also specialize in ls and lt swap standalone harnesses. We also carry many other products to help you with your swap including hard to find air conditioning parts. This includes the lt1 ls1 ls2 ls3 ls7 l99 l76 l77 l92 l98 lm7 lm4 lsa ls9 l83 and the new gen v lt1. These harnesses include the gen ii lt1 lt4 gen iii 24x ls1 ls6 and vortec truck engines as well as gen iv 58x ls2 ls3 ls7 vortec and gen v lt ecotec3 engines.

Speartech is your ls lt wiring harness swap specialist. The are built with new gm delphi connector and high temperature wires. The 6 2l ls3 6l80e standalone wiring harness is designed to let you put the 2008 2014 ls3 6 2l engine in just about any vehicle. Hopefully you can find guidance or at least some clarity in what options are available and make a decision that best fits your application and budget.

Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions.