---
product_id: 306844300
title: "Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet/GMC Models"
brand: "dorman"
price: "€ 73.62"
currency: EUR
in_stock: true
reviews_count: 5
category: "Dorman"
url: https://www.desertcart.ie/products/306844300-dorman-600-600-4wd-actuator-wiring-harness-compatible-with-select
store_origin: IE
region: Ireland
---

# On-demand 4WD actuator tech Plug & play easy install Durable, defect-free build Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet/GMC Models

**Brand:** dorman
**Price:** € 73.62
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your 4WD game — don’t get left behind!

## Quick Answers

- **What is this?** Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet/GMC Models by dorman
- **How much does it cost?** € 73.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/306844300-dorman-600-600-4wd-actuator-wiring-harness-compatible-with-select)

## Best For

- dorman enthusiasts

## Why This Product

- Trusted dorman brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Engineered with premium materials ensuring long-term reliability in all weather conditions.
- • **Instant 4WD Engagement:** Experience seamless, on-demand 4WD activation that transforms your ride’s capability.
- • **Effortless Installation:** Plug & play wiring harness designed for quick upgrades without the hassle of complex splicing.
- • **Precision Fit Guarantee:** Use our garage tool to confirm perfect compatibility with your Chevrolet or GMC model.
- • **Trusted American Engineering:** Backed by a dedicated US-based design and engineering team for quality assurance.

## Overview

The Dorman 600-600 4WD Actuator Wiring Harness is a durable, plug-and-play replacement designed to convert older Chevrolet and GMC models to modern electric actuator technology. Engineered in the USA, it ensures reliable, instant 4WD engagement with a precise fit guaranteed by vehicle-specific compatibility checks. This harness offers a hassle-free upgrade that enhances your vehicle’s off-road readiness and longevity.

## Description

Buy Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet/GMC Models online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Real easy install.. Was an upgrade to the old thermal actuator , so had to install new wiring harness as well . Works great so far ..
Review: Update: This harness and actuator are still working flawlessly on my 93 K1500 in Minnesota weather. I have had them installed for the past 4 years and they are still the best $100 investment I have made. Great product and along with the actuator (600-101) it is well worth the price. I am sure you could build this harness yourself for half the price but overall it is plug and play which has to be worth something as far as convenience goes. The actuator seems a little mickey mouse being that it is all plastic but supposedly these things last longer and are more reliable than the junk thermal unit that you are replacing. The picture of the actuator shows some pipe sealing tape on the threads but mine didn't come with any on it so I added some of my own. Figured it couldn't hurt. The most important thing I can tell you is that when you get to the part of the instructions where they have you splicing the extra brown wire in this harness into an existing wire under your truck, do yourself a favor and throw the instructions away or better yet use them as fire starter. Rather than making a splice under your truck in a very difficult location that is exposed to the elements and is likely to corrode, make your connection inside of your truck cab. If you do this, you do not need to make a splice into another wire, you can make your power connection in an open slot in the "convenience center" located under your dash just behind the parking brake foot lever. I have read other reviews where guys have done this and made their connection at the middle spade of the slot called "DRK GRN". Well, my 1993 K1500 doesn't have a slot called DRK GRN with three terminals in it (neither does my buddy's 1994). If your truck does, congratulations!, you can make your connection there. In my case, I used a voltage meter to find a terminal in the convenience center that has 12V ONLY when the key is in the run position. If you don't have a volt meter handy, I'll make it very easy for you. On the right side of the panel, approximately half way up, there is a brown wire with a white connector plugged in. The next terminal to the left should be open (at least it was on my truck), make your connection there. Use a female spade connector and plug the brown wire from your new harness into the terminal. This is a small pin connection but a female spade connector will still work. Just as an FYI, the brown wire with white connector right next door is the same wire that the instructions want you to splice into under your truck. Both of these terminals in the convenience center are on the same circuit. At the end of the day, any terminal in the panel that has 12V when the key is turned on will work. If you are efficient with your wire routing, there is just enough wire to get to the convenience center. I made my penetration through the firewall with a 1/4" drill bit just above where the hood release cable goes through. I also installed a small rubber grommet to prevent wire chaffing which I would recommend you do as well. My 4X4 now engages almost instantly (major improvement)! Best hundred bucks I have ever spent. As a side note, don't bother trying to talk with dorman customer service, they have no clue what they are talking about. This has been a long review with a lot of information in it but I hope it helps you guys. I know this is the review I wish I had before I did the job. Total install is less than an hour. Routing and zip tying the brown wire is what takes the most time. Second pair of hands/eyes would have made the job go faster as well. Good luck!

## Features

- Upgraded replacement - this 4WD actuator wiring harness allows you to convert an older model vehicle to a new electric actuator
- Improves operation - by making use of new on-demand actuator technology, conversion facilitates easy 4WD engagement
- Durable construction - built for reliable longevity, free of defects in materials and workmanship
- Trustworthy quality - backed by team of designers and engineers in the United States
- Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001C6Q7Q2 |
| Best Sellers Rank | #131,550 in Automotive ( See Top 100 in Automotive ) #332 in Car Electrical Wiring Harnesses |
| Brand | Dorman |
| Customer Reviews | 4.5 4.5 out of 5 stars (223) |
| Date First Available | 1 January 2024 |
| Exterior | Ready To Paint If Needed |
| Item Weight | 327 g |
| Item model number | 600-600 |
| Manufacturer | Dorman Products |
| Manufacturer Part Number | 600-600 |
| Model | 4WD WIRE HARNESS |
| OEM Part Number | S2806; 12376316; 88959465 |
| Product Dimensions | 25.65 x 26.16 x 7.87 cm; 326.59 g |

## Images

![Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet/GMC Models - Image 1](https://m.media-amazon.com/images/I/81crBYdtnoL.jpg)

## Questions & Answers

**Q: Whar is the slug used for in the package?**
A: It takes up the space between the new actuator and axel pusher. So put the slug into the opening with the flats facing out then screw the actuator in the axel

**Q: Is this the blade or pin connector for the actuator?**
A: I don’t remember. It is to convert the old style thermal actuator to the newer style electric actuator. A good upgrade.

**Q: Where does the brown wire go?**
A: I routed mine to the FWD shifter and attached it to the hot wire going to transfer case switch.

**Q: Does anyone know the size of the steel slug used in this kit? I wanna make my own and save some money.**
A: The dimensions are .7525" thick, 1.19" wide. These dimensions came from Dorman.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***B on 27 December 2021*

Real easy install.. Was an upgrade to the old thermal actuator , so had to install new wiring harness as well . Works great so far ..

### ⭐⭐⭐⭐⭐ Review
*by S***. on 24 November 2016*

Update: This harness and actuator are still working flawlessly on my 93 K1500 in Minnesota weather. I have had them installed for the past 4 years and they are still the best $100 investment I have made. Great product and along with the actuator (600-101) it is well worth the price. I am sure you could build this harness yourself for half the price but overall it is plug and play which has to be worth something as far as convenience goes. The actuator seems a little mickey mouse being that it is all plastic but supposedly these things last longer and are more reliable than the junk thermal unit that you are replacing. The picture of the actuator shows some pipe sealing tape on the threads but mine didn't come with any on it so I added some of my own. Figured it couldn't hurt. The most important thing I can tell you is that when you get to the part of the instructions where they have you splicing the extra brown wire in this harness into an existing wire under your truck, do yourself a favor and throw the instructions away or better yet use them as fire starter. Rather than making a splice under your truck in a very difficult location that is exposed to the elements and is likely to corrode, make your connection inside of your truck cab. If you do this, you do not need to make a splice into another wire, you can make your power connection in an open slot in the "convenience center" located under your dash just behind the parking brake foot lever. I have read other reviews where guys have done this and made their connection at the middle spade of the slot called "DRK GRN". Well, my 1993 K1500 doesn't have a slot called DRK GRN with three terminals in it (neither does my buddy's 1994). If your truck does, congratulations!, you can make your connection there. In my case, I used a voltage meter to find a terminal in the convenience center that has 12V ONLY when the key is in the run position. If you don't have a volt meter handy, I'll make it very easy for you. On the right side of the panel, approximately half way up, there is a brown wire with a white connector plugged in. The next terminal to the left should be open (at least it was on my truck), make your connection there. Use a female spade connector and plug the brown wire from your new harness into the terminal. This is a small pin connection but a female spade connector will still work. Just as an FYI, the brown wire with white connector right next door is the same wire that the instructions want you to splice into under your truck. Both of these terminals in the convenience center are on the same circuit. At the end of the day, any terminal in the panel that has 12V when the key is turned on will work. If you are efficient with your wire routing, there is just enough wire to get to the convenience center. I made my penetration through the firewall with a 1/4" drill bit just above where the hood release cable goes through. I also installed a small rubber grommet to prevent wire chaffing which I would recommend you do as well. My 4X4 now engages almost instantly (major improvement)! Best hundred bucks I have ever spent. As a side note, don't bother trying to talk with dorman customer service, they have no clue what they are talking about. This has been a long review with a lot of information in it but I hope it helps you guys. I know this is the review I wish I had before I did the job. Total install is less than an hour. Routing and zip tying the brown wire is what takes the most time. Second pair of hands/eyes would have made the job go faster as well. Good luck!

### ⭐⭐⭐⭐⭐ Review
*by A***R on 23 April 2017*

Update: today was about 40 or so degrees out, the sun was shining and the snow was melting, so naturally there would be puddles of water on the roadway. I hit one such puddle today, and it caused the electronic actuator to short out and try to engage 4wd while I was going about 30 mph in 2hi. Now the actuator wont engage at all, but the 4wd light is illuminated. Hey Dorman!? Whats the lifetime warranty say about puddles?? Not sure what to do here. Purchased with the mechanical actuator for a retrofit on a 92 k 1500. So far it works like a charm. Plug and play with the existing two prong connector to the actuator, and one simple connection to key on power. No splice needed. Those wire taps are a problem waiting to happen. Had enough length to do the job and then some. (That's what she said) I was lucky and had a hole in the firewall right behind the parking brake where it needed to be, it was a snap to connect to a key-on-power...It even had a grommet so as to reduce the likelihood of a short. I was able to route the harness far enough away from (I hope) the heat of the exhaust and the spinning shafts that would snatch a wayward wire away. Will update if anything noteworthy occurs.

## Frequently Bought Together

- Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet / GMC Models
- Dorman 600-101 4WD Actuator Compatible with Select Models
- Dorman 600-502 Transfer Case Switch Compatible with Select Cadillac / Chevrolet / GMC Models

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-19*