Who would you guys suggest for a stand alone engine wiring harness? My engine I have is a LQ4 from a 2000 Silverado 2500 and I'm looking for a 4L80E to put behind it.

 

There are several sponsors that offer excellent harness kits.

Andrew

 

Yeah that's why I asked what people use I was thinking of going with LS Performance Wiring however it seems that it takes forever for him to get stuff sent out.

 

Bp automotive

 

This forum is like a Nascar diver with multiple sponsors that all make the same thing. When you ask, you will get people recommending all of them. Speartech has been around the longest I think of them all, and I don't think I have ever seen anything negative about him. PSI and BP Automotive have come on the scene lately and have their followers as well. There are a couple others on the list as well lately, but I think those are the popular ones. So when you ask for recommendations, you will receive multiple people telling you to use any one vendor.
My recommendation to anyone looking for a harness... go with a well established company. Not some guy in his garage building harnesses in his underwear claiming the cheapest prices in town.

 

While I haven't recieved my harness yet, I would say BP Automotive. Based only on Amazing customer service and contact! I sent out an email to several sponsors with what I needed and wanted for my project. Bill was the only one to contact me with questions to make sure what I got would be what I needed. I have no doubt Bill will be there if I need help or info during the install or anytime after that.

 

you wont beat bills customer service (BP Automotive) His harness is perfect also, Very easy install with all the wires the correct length.

 

My big thing is that I'm planning to put a LQ4 into my 1974 Blazer and when that is up and running find another LQ4 to put into my 1991 Suburban V1500 and then I have plans to try and build a square body extended cab with another LQ4 probably. So I want someone that will stand behind there product if or when I need help on the install or diagnosing any problems that may come up.

 

PSI user here, great service/product and tech line friendly.

 

We've (painless performance) been around for 25 years

To the OP, be sure to check out our harness. We just had a price drop on it, that one is now $625 and includes a free ecm reflash.

 

Yeah Painless has been one I've been looking at, I've also been looking at the info on LT1Swap. The harness on my engine was so cut up that I just tossed it out so I've been trying to find a LQ4 harness that came with a 2wd 4L80E. I'm also trying to decide if I go with a cable throttle body or drive by wire.

 

100% don't go with LS Performance wiring, review to come when my money is refunded.

 

you can see my build thread for what i used. its one of the best available.

 

I've used LSXharness.com He does a lot of add ons at no cost. ex I went to LS3 and bought all the extra conversion harnesses to make it work. Knock sensors now on side of block, map now in front, 5 wire MAF, injectors different plug and something else. He would have done it at no cost on the additions since he is already rewiring it all.

 

We carry harnesses as well. We can customize them any way you would like too. PM me what you got and what you need and I will get you a price!

 

Personally...I would like to hear from the guys the independantly do it ,there has to be some that do it with pride...arent we just taking a stock truck 5.3 harness and removing the pins and wires that are not used,then reprogramming the pcm to not throw codes or look for certain things..
or am i not getting it


i checked this out and like the pricing,,,dont need to sell any kids....
http://www.lsxharness.com/

 

Here's a couple of things to consider... For the most part, just looking at a harness be it from any vendor will look fairly similar to most people. However the differences are far beyond just looks. With a reworked harness you are getting something that is used. Leaving the window far more open for possible headaches down the road. Every day, I talk to people that don't understand wiring or they are afraid of messing with it. Yet, most of those people would rather save one or two hundred bucks now, to only having to deal with potential headaches later. That then is when you will find out the value of your harness and the company you got it from. Good luck getting tech support from a guy that does the harness in his basement. We took over 30k tech calls last year and some of those are from people in that situation. Unfortunately at that point we can't offer exact help, but we do what we can.

When building your engine you probably research everything you can and find only the best stuff. Generally when it comes to wiring, people are scared of it and just find the cheapest thing they can. This creates a negative feedback loop. Because then, with the cheaper wiring, they run into issues, further strengthening their belief that wiring is scary and they hate it.

I guess my point is, you pay for reassurance and confidence in the product. There are a few solid companies on here that make a new harness, ours included, that are well worth the price.

Sorry for the long read

 

Are you able to offer any harness customization? I really like the Bussmann box and DLC/SES light combo you offer. I would need additional length for the main ECU harnesses though.

 

Subscribed.

 

We don't offer anything 'one off'. However we do offer extended length versions of some of our harnesses for an extra $50. They include an additional 4' in the main section of the wiring. This allows the ECU to be mounted near the center console.

LS1 version: http://www.painlessperformance.com/webcat/60509

Gen 3 truck version: http://www.painlessperformance.com/webcat/60218

Unfortunately we don't offer an extended length on the harness with the weatherproof bussmann fuseblock, though.