All harnesses are NOT created equal.

[BP Automotive]

Originally Posted by jessemthompson

I priced out the harness on your site with the options and it was $775 for just the harness?

What was your donor vehicle and what options are you wanting?

As I mentioned, the rewire you are looking at does not include any fan relays or any extras from what I can tell. Its the bare minimum.

Our Base series that has the same options as that rewire starts at $500 or $550 depending on throttle type.

Bill

[jessemthompson]

So I'm leaning the BP way at this point. This is my first LS Swap. What are you guys doing as far as wiring the fuel pump in and the charging system?

[Tilt]

Originally Posted by GMC-YA68

That's what he's saying. Speartech Re-wire = $600. BP brand new stand alone harness w/ all the goodies = $800 and you can sell your factory harness off to compensate for the most of the difference and be better off in the end and not have an ugly "modified" factory harness.

I have a very good friend that specializes in LSx swaps and he doesn't even think twice about a re-wire service, nor re-wiring himself as it is so time consuming. Easy and hassle free to have everything come to you plug and play with no headaches and focus on the rest of the build. Even better if it is a vendor on the forum who guarantees their work.

It was a no brainer to me. I sent my order in for a new harness from Bill @ BP. He has answered all of my stupid/dummy questions and got me straightened out each and every time I have contacted him.

Listen to what he says and you won't regret it.

This is exactly why I decided to go with the BP harness. With this being my first swap, I figured it was money well spent to not have to deal with the trouble of rewiring the factory harness and possibility of making mistakes. I may have missed it on the web site, but does the Premium harness come with the OBDII port already?

[DirtyLarry]

Hey Bill,

Are you set up with the diagrams and layouts to build an 8.1L as well? I get tons of inquiries on everything 8.1L related where people are looking for harnesses, which I’ve always used Howell Engine Development for my projects and sent people their way but as of late I am beyond frustrated with working with Troy over there and have no plans to use their services again nor will I send them any more business. So with that, I’m looking for a good harness source to point people. We also have growing number of people joining our Facebook page called the “8.1 Info Swap Classifieds”. Stand-alone harnesses are always a big topic. Might be a nice little niche group of swappers to get involved with. The nice thing with the 8.1L is they are pretty consistent from 2001-2010 in terms of wiring, connectors, ECM, etc. unlike the more popular Gen III and Gen IV small blocks where there are several different variations.

[splatrd]

Hi Bill. I am interested in your DIY REWIRE kit. I did an LT1 swap years ago using factory service manual and just transferred everything from donor vehicle. This go round I am swapping a '03 LQ4 6.0 from an Express van into my 72 C-10. I want to eliminate all emissions, and only use one set of O2 sensors. No A/C, but want fan control. My question is related to reprogramming the computer and wire pin outs. I found some schematics on line that seem to jive with my harness, but there are a couple of circuits that are different. Does your kit give any instructions on what pins to use? I assume that the reprogramming will change some of the pin outs? Would your kit require use of your reprogramming service to be compatible?
Thanks

Paul

[GMC-YA68]

Just want to say my harness came back flawless and dummy proof. Spectacular job Bill. Thank you.

P.S. - I need to send you back my PCM, I went with a different gear ratio than what I originally told you.