What temperature should someone use to melt the solder but not burn the waterproof plastic/shrink wrap?

I USED LOW TEMP SETTING ON MY HEAT GUN.. BUT I WATCHED CLOSELY TO SEE WHEN THE SOLDER MELTED AND PROMPTLY REMOVED HEAT. WORKED WELL.

Is this what I'd use to wire my KC lights to the stock fog lights wiring?

Yes, solder seal wire connectors are an excellent choice.

is it possible to connect 3 wires together with these?

Hello friend, thank you for your question. We are sorry to tell you that 3 wires could not be connected with one of these solder butt connector. It would be better for you to connect 2 wires with one connector. Hope this would help you. If you have any additional questions, please feel free to let us seller know. We would try our best to assist you. Thanks:)

can you use a lighter or torch on these?

lighter most cases. torches usually make too much heat. It will take a little while (and a few damaged connectors) to get a hang of it. too much heat burns the connectors. not enough and the solder does not melt. light and steady heat shrinks connectors and melts the solder. thicker wires are a little trickier as they take more heat to melt solder. this does take a little bit of time than crimping but the results are worth it. I used this for my boat rewire.

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Sopoby 50pcs Solder Seal Wire Connector, Solder Seal Heat Shrink Butt Connectors Terminals Electrical Waterproof Insulated Marine Automotive Copper(23Red 12Blue 10White 5Yellow)

Sopoby 50pcs Solder Seal Wire Connector, Solder Seal Heat Shrink Butt Connectors Terminals Electrical Waterproof Insulated Marine Automotive Copper(23Red 12Blue 10White 5Yellow)

Product ID: 275747658

Details

Connector type
Solder
Contact material
Copper
Insulation material
Polyolefin
Stud size
5 millimeters
Terminal
Butt Terminal

💧waterproof & insulated seal

🔍transparent sleeve for wire inspection

🔥2:1 heat shrink ratio

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Description

🔥 Seal the deal with every connection — flawless, fast, and fail-proof!

UNBREAKABLE GRIP - Solder flows through wires ensuring no slip, even in marine or automotive environments.
COMPLETE COLOR CODED KIT - 50 connectors in 4 colors for organized, efficient wiring projects.
PRECISION VISUAL CONTROL - Transparent sleeve lets you verify perfect wire placement every time.
CERTIFIED QUALITY ASSURANCE - Meets strict European standards for reliable, professional-grade performance.
EFFORTLESS ONE STEP CONNECTION - Simplify your wiring with solder and heat shrink in a single seamless process.

The Sopoby 50pcs Solder Seal Wire Connector kit features heat shrink butt connectors with a 2:1 shrinking ratio and transparent sleeves for precise wire inspection. Designed for waterproof, insulated, and slip-resistant connections, these copper terminals meet European quality standards and are ideal for marine and automotive wiring. The kit includes 50 color-coded connectors (23 red, 12 blue, 10 white, 5 yellow) to streamline your electrical projects with professional reliability.

Specifications

ASIN	B01DPS8DPM
Best Sellers Rank	#18,418 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #135 in Butt Terminals
Brand Name	Sopoby
Color	Red, Blue, White, Yellow
Connector Gender	Male
Connector Type	Butt Splice
Contact Material	Copper
Customer Reviews	4.6 out of 5 stars 8,250 Reviews
Gauge	AWG 26-10
Included Components	1
Insulation Material	Polyolefin
Insulation Material Type	Polyolefin
Item Dimensions L x W x H	4.72"L x 2.36"W x 0.5"H
Manufacturer	Sopoby
Material	Polyolefin Tubing with Solder inside
Material Type	Polyolefin Tubing with Solder inside
Maximum Voltage	240 Volts
Model	Sopoby207
Number of Items	1
Part Number	Sopoby207
Specification Met	① Minimum Shrink Temperature: 80℃, ② Minimum Temperature for Solder to Melt: 138℃
Temperature Rating	257 degree fahrenheit
Terminal	Butt Terminal
UPC	635902526435
Unit Count	50.0 Count

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VT6837

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

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