Can they be used with 20awg and 24awg?

20AWG - maybe. With PVC insulation probably not. Silicone is fine, although may require pliers or something to clip it shut.

so the images show two ways of wiring, what is correct in terms of which way do you wire to ensure positive to positve conenct?

There is a positive/ negative route diagram on each clip to prevent cross overs.

Are these really 8cm long. Seems very big to me.

These connected are about 25mm long. They are only made for very thin wire. Anything thicker than speaker wire they will not close or cut the wire in two. As connectors they are very good. I have used them in my car.

Can this be used for outside, in junction box, to connect security camera and light wires with main

As long as the junction box is waterproof for outside use.

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FOCCTS 12Pcs Black/Transparent 2 Pin T-connector Pin Terminal Wire Connectors, 20-22 AWG, Copper, Plastic, -30°C ~ +85°C

FOCCTS 12Pcs Black/Transparent 2 Pin T-connector Pin Terminal Wire Connectors, 20-22 AWG, Copper, Plastic, -30°C ~ +85°C

Product ID: 70994106

Details

Colour
Connector type
T-connector
Contact material
Brass
Insulation material
Plastic
Terminal
Pin Terminal

⚡12V/24V low-voltage safe power

🔥Fireproof & heat resistant -30°C to +85°C

🔧No strip, solder, or tape needed

¥3587

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Description

⚡ Connect smarter, not harder — wire like a pro in seconds!

REUSABLE ECO FRIENDLY - Snap-lock connectors can be reused multiple times, reducing waste and saving you money on replacements.
VERSATILE COMPATIBILITY - Perfect for 20-22 AWG wires, supporting up to 10A current at 12V/24V—ideal for automotive, LED lighting, and audio setups.
PLUG AND PLAY CONVENIENCE - Designed for pros and DIYers alike—quickly tap into existing wiring without specialized tools or training.
BUILT FOR SAFETY DURABILITY - Fireproof, waterproof, and dustproof connectors ensure reliable, shock-resistant performance in any environment.
EFFORTLESS SOLDERLESS CONNECTIONS - Innovative lock flap design lets you splice wires instantly—no stripping or soldering required.

FOCCTS 12Pcs 2-Pin T-Tap Wire Connectors deliver a fast, safe, and solderless solution for low-voltage (12V/24V) electrical connections. Featuring fireproof, waterproof, and dustproof plastic housing with brass contacts, these connectors support 20-22 AWG wires and operate reliably from -30°C to +85°C. Their innovative lock flap design eliminates the need for wire stripping or soldering, making them perfect for automotive, LED lighting, audio, and other low-voltage applications. Each pack includes 12 reusable connectors engineered for quick, secure, and durable splicing.

Specifications

ASIN	B07F3SGJXR
Best Sellers Rank	49,125 in DIY & Tools ( See Top 100 in DIY & Tools ) 254 in Electrical Terminals & Kits
Brand	FOCCTS
Colour	black/Transparent
Connector Gender	Male
Connector Type	T-connector
Contact Material	Brass
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (3,118)
Included Components	Pack of 12 T Tap Dual Way
Insulation Material Type	Plastic
Item Dimensions L x W x H	8L x 6W x 1H centimetres
Manufacturer	FOCCTS
Manufacturer Part Number	SB-122
Material	Metal
Maximum Voltage	24 Volts
Model Number	AK3-AT1-GL-M-X
Number of Items	12
Specification Met	RoHS, Flame Retardant, None
Temperature Rating	-30°C ~ +85°C
Terminal	Pin Terminal
UPC	750440597249

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¥3587

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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