Wirefy Heat Shrink Wire Connectors Kit - Marine Grade Electrical Connectors - Automotive Butt Connectors - Insulated Ring, Spade, Fork, Hook Crimp Terminals - 22-10 Gauge - 270 PCS

The Wirefy Heat Shrink Wire Connectors Kit is the perfect solution for all your automotive and electrical wiring needs. With 270 pieces of high-quality, heat-shrinkable connectors, this kit includes a variety of butt connectors, ring terminals, spade terminals, fork connectors, and hook connectors in sizes ranging from 22-10 gauge, ensuring you have the right fit for any job. 🛠️ These insulated connectors provide superior protection against moisture, corrosion, and wear, thanks to the heat shrink feature that creates a tight, waterproof seal when heated. 🌧️ Whether you're working on automotive wiring, marine projects, or home electrical repairs, the durable, resistant design ensures reliable, long-lasting connections. Perfect for both DIY enthusiasts and professional electricians, this kit helps you tackle any project with confidence and ease! ⚡

A quality product. It has a dual wall plastic cover; the inner wall is glue and the outer wall shrinkable plastic. When heat is applied, the plastic shrinks (ratio 3:1) and the glue (polyolefin) melts to form a good seal.The best crimps are done with a ratcheting terminal crimper, which applies the correct pressure (see further below).There is a broad selection of crimps in the kit, both the type and the size (9 types in 3 sizes).A dual wall crimp saves space when that is scare, like on a boat or travelling remotely in a car. I take a selection of crimps in a smaller container to save even more space.The 540 piece kit has enough crimp terminals for most general purpose tasks around the boat or car. This is the best all round terminal kit I have purchased.There is a difference between a single wall and dual wall crimp, the glue in the dual wall gives a stiffer result with less movement, but it also improves the overall strength. If you an issue with vibration (like Outback Australia or Africa) a single wall crimp maybe better, as it reduces the damage caused by corrugations/vibrations by allowing more movement reducing the damaging effects of corrugations. Choose the best option for a given job.CRIMPING TIPSSome suggestions on getting good crimps:1. Buy quality terminals like the Wirefy.2. Purchase a good wire stripper like the IRWIN VISE-GRIP 2078300 Self-Adjusting Wire Stripper or the Klein Tools 11063W Katapult Wire Stripper.3. Purchase a Ratcheting Terminal Crimper. If you want a variety of dye heads for different jobs look at the SG Tool Aid SGT18980 Ratcheting Terminal Crimping Kit. iwiss makes a range of specialist crimpers.4. Strip the insulation from the wire to the correct length with the wire stripper (note how much quicker, easier and better quality the wire stripper is compared to a pair of pliers).5. Match the Wirefy terminal to the wire thickness (important for good crimps).6. Place the terminal in the correct dye in the crimping tool. I gently close the crimper to lock the dye onto the terminal but without compressing the terminal, then I insert the wire into the terminal and compress the crimping tool.7. Using the correct size dye and placing the terminal correctly into the dye is important.8. A ratcheting crimper applies the correct pressure to make a great crimp.9. Use an electric/butane heat gun to shrink the plastic cover and melt the glue. I apply heat until I can see the crimp seal and a little glue comes out of the plastic cover. Wirefy terminals are translucent so you can see through the plastic to inspect the seal.10. Let it cool. Job done. Test the crimp.11. Common mistakes when crimping: a) not matching the wire size to the crimp terminal, b) not using the correct dye for a given terminal type, c) not correctly placing the crimp terminal correctly in the dye jaws.12. Practice is important. Develop a good technique before using crimps in real life. I have cheap terminals and old wire and I practice to develop a good technique before doing a job for real. Test both single and dual wall terminals and see for yourself the differences in stiffness I discussed above.The initial cost of the tools can be expensive, but they will give you a life time of service. One job I did on my car, meant the tools paid for themselves. I wish I had brought them years ago!Buying the larger size kits like the 540 Wirefy saves money. I spilt the terminals between me and 2 friends – we all get a selection and a big cost saving. Buying terminals in small kits is very, very expensive.I have found more uses for the crimps than I originally thought.

A nice product. Heat shrink is good quality. I have used crimp style connectors for years. The old hard plastic connectors are alright and rarely failed; however I feel these deliver a far superior end product. Glad to use them in my business. I've been using these for 2 years. Hundreds of connections, no failures yet.

These connectors did work for me, but I ran into a few problems. This is coming from a weekend warrior; not a electrical veteran.First, and this isn't necessarily a problem with the product, but important for customers to know: a hair dryer will not work; period. We have a very high temperature, high power one here that I thought would work with some patience; it didn't make a dent. I had to order a heat gun and use it on a high settings to even begin shrinkage. So factor that into your cost analysis.Second, I assumed electrical connectors were standard sizes, and that I could trust the measurements given. Unfortunately, none of the yellow connectors fit into my PSU's terminals except the male spades, and there wasn't nearly enough room for the terminal screw to go through that (since that's not really what they're for). In the end I didn't use the connectors, I attached the bare wire, which made my purchase of these pointless. I measured the size of my PSU's terminals at 3/8" and this kit includes 1/4" connectors, but that's an internal diameter; this may be standard, but I wish the description had included something about this for beginners.But here is my big complaint: the wire sizes are wrong. I tried to use a blue butt connector to connect an 18 awg wire to a 22 awg wire. They didn't fit. I had to use a yellow to attach them. And I couldn't fit my 10 awg wire into the yellow butt joint at all. This caused a serious problem for me and set me back quite a bit.However, the connectors held well once installed and the heat shrink worked as expected. The heat shrink material seemed sturdy and I had no problems with tearing. In the end I was able to get the job done (although without connectors for my PSU.