--- product_id: 71140937 title: "ACC0410 Add-A-Wire Kit" brand: "venstar" price: "฿4223" currency: THB in_stock: true reviews_count: 10 url: https://www.desertcart.co.th/products/71140937-acc0410-add-a-wire-kit store_origin: TH region: Thailand --- # Adds wiring without new runs Compatible with 4-6 wire systems Easy install, no rewiring hassle ACC0410 Add-A-Wire Kit **Brand:** venstar **Price:** ฿4223 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your HVAC game without the headache! ## Quick Answers - **What is this?** ACC0410 Add-A-Wire Kit by venstar - **How much does it cost?** ฿4223 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/71140937-acc0410-add-a-wire-kit) ## Best For - venstar enthusiasts ## Why This Product - Trusted venstar brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Concealed:** Mounts inside equipment, keeping your setup sleek and discreet. - • **Long Reach, No Limits:** Supports up to 100 feet with 18-gauge wire for flexible installation. - • **Fix & Upgrade On-the-Fly:** Perfect for broken common wires or adding cooling to heat-only systems without rewiring. - • **Plug & Play Compatibility:** Seamlessly works with Venstar’s full thermostat lineup for instant upgrades. - • **Wire Magic: Add a Wire Without the Mess:** Transforms 4-wire setups into 5 or 6-wire functionality effortlessly. ## Overview The Venstar ACC0410 Add-A-Wire Kit is a smart retrofit solution that adds wiring functionality to your thermostat without running new cables. Compatible with multiple Venstar thermostat models, it enables 4-wire systems to perform like 5 or 6-wire setups, ideal for fixing broken common wires or adding cooling to heat-only systems. Easy to install and designed for indoor mounting, it supports up to 100 feet of 18-gauge wire, making it a must-have for hassle-free HVAC upgrades. ## Description In applications where additional wiring cannot be run to your programmable digital thermostat, the Add-A-Wire accessory can be used to add a wire to the thermostat. The accessory can also be used for fixing a broken wire, to make one thermostat work like two, to add cooling to a heat-only system, or to add a common wire to a 4-wire system.Please note that the green and yellow wires of the Diode "Y" may not be connected to the R or C terminal of the thermostat. (The function of a diode is to allow current in one direction and to block current in the opposite direction.)This accessory works with the Venstar 1-Day Programmable Digital Thermostat, the 7-Day Programmable Digital Thermostat, and the 7-Day Programmable Thermostat, Dual Fuel (each sold separately).STANDARD FEATURES:* Includes Yellow, Green, Blue wire splice (directionally sensitive)* Includes 4 wire nuts* Wires running from Add-A-Wire accessory are 9 inch long* Maximum distance for Add-A-Wire using 18-gauge wire is 100 feet* Makes one wire work like two* Mounts inside equipment (not for outdoor use)* For use with 24-volt HVAC systems* Cannot be used as "R" power or "C" common wire. ## Features - In applications where additional wiring cannot be run, the Add-A-Wire accessory can be used to add a wire to the thermostat. C-Wire Terminal is required - Great for installations with a broken “common” wire or retrofits. - Easy to install, Easier than running new wire. - Allows 5 wire thermostats to use only 4 wires. Also allows 5 wires to work like 6 wires. - Compatible with Venstar ColorTouch, Explorer, Explorer Mini, Slimline, Small Series, FlatStat, and Value Series thermostats. ## Images ![ACC0410 Add-A-Wire Kit - Image 1](https://m.media-amazon.com/images/I/41lZqBZIQxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Easy to Install *by S***. on Reviewed in the United States on August 4, 2018* First off, I suggest watching the Venstar Add-a-Wire official video on YouTube. This is what I used for reference while doing my installation. Wire charts (like what is included in the package) are not helpful to me. Anyhow, I got it set up in about 2.5 hours (this included a trip to Lowe’s and actually LOCATING my furnace). During installation, I just used a drill, mini screwdriver set, wire cutters/strippers, and what was included in the package. It was way easier and hundreds of dollars cheaper than running a whole new wiring setup. I’ve had it installed for about 2-3 weeks and my smart thermostat is working beautifully (and saving me money in the process). I couldn’t be happier! If this changes, I will update.Update: 2 years later and still working perfectly!! ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Awesome way to add a wire when you need a 5th *by G***H on Reviewed in the United States on August 18, 2020* I received a smart wifi thermometer that required to have a 5th wire in order to properly function the thermostat.I got some wire and some fishtape and attempted to fish my own wire, which I was not successful.This little unit is amazing, it lets you create a 5th wire where you only have 4. Basically it takes one of the wires, splits it into two on the thermostat end, then on the furnace end you add this little module to your furnace controller board and it allows for a 5th wire.I have been using it through all the summer AC use and its working like a champ and now I am totally controlled by wifi.If you are looking to add a wire on a 4 wire system and you need a 5th, if you cant run your own wire, this is the next best thing. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Great product! *by A***R on Reviewed in the United States on July 26, 2018* When installing a Nest thermostat I researched to ensure our AC system is compatible. I read that the "C" or "Common" wire (constant 24v power) is not necessary for the Nest, and so we could install it even though our system had no "C" wire running to the thermostat. However, I read one source that said the Nest will "pulse" the furnace to recharge itself, which kicks on the system even though no AC/heat is used/needed. So, I got this kit so we could have a "C" wire and not have the pulsing issue. Installing was a breeze and the Nest works great! Just watch the video posted by Venstar for help installing it! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/71140937-acc0410-add-a-wire-kit](https://www.desertcart.co.th/products/71140937-acc0410-add-a-wire-kit) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-27*