Recommendation for custom LS harness?

**1project2many** · 03-12-2020

Hello,

This may sound strange but I'm looking for recommendations for a custom harness builder. A friend has an LS swapped into an S10 and needs to complete the project. He asked me to build a harness and I happily volunteered to help... three years ago. I cannot seem to find time to complete this or many of my other projects so my friend is now looking for a pay-for solution. Feel free to reply here or PM if you can take on, or know someone who can take on, this task.

Thanks,
Shannen

**NomakeWan** · 03-12-2020

Wiring Specialities is pretty much the go-to when I think of wiring harnesses. They do a lot of LS-swap stuff into various chassis, including into other GM products. I would check them out first.

https://www.wiringspecialties.com/

**B52Bombardier1** · 03-13-2020

I'm running an engine harness from "PSI Conversions". No complaints. They have a questionnaire process to define the exact connectors, fuel injector wiring, the need for PCM control of air conditioning, etc. They nailed it perfectly for me.

Rick

**PlayingWithTBI** · 03-13-2020

What about Painless Performance?

https://www.painlessperformance.com/

**LRT** · 03-13-2020

....

**lionelhutz** · 03-13-2020

Doesn't Dave W build LS harnesses? The pictures I've seen of his work looked really nice but I have no 1st hand experience.

**In-Tech** · 03-13-2020

Hi Shannen,
I think Dave W does harness stuff and I can help with a harness too. Do you want to modify a stock harness or do you want one built from scratch. Do you want it standalone or integrated into something? LS1,2 or 3 style. What ECM/PCM? Where does is need to be mounted, engine bay or interior? Is this cable throttle or electronic? Is it 4L60e or manual or ?
Thanks,
-Carl

**1project2many** · 03-14-2020

Thanks, everyone.

The original truck was 2002 2.2 / 5 speed. It's currently 4.7 / 4L60E. The owner is hoping the stock ecm location cn be used and most of the stock in-cab circuits will work.

I'll check out the vendors listed. I believe Dave does harnesses but contributes a bunch of effort to help keep this site going that I probably won't bother him for anything else. lol.