Is it resistent to UV light (i.e.,exterior use)?

Silicone is highly UV resistant. Howver, single conductor wire should not be used "in the open" if the voltage on the conductors is hazardous, approx 24 volts ac or 60 volts dc. There is a need for mechanical protection of insulation (like at least the jacket of a cable, if not some sort of conduit) as well as basic insulation.

Can someone confirm me what over diameter means? is it the insulator + wire diameter?

The standardized method of measuring the thickness of a cable (American Wire Gauge or AWG) was established in 1857 in the United States. This form of measuring cable thickness is used specifically for electrically conductive wire. Note that the diameter of the cable does not include the outer insulation - just the conducting wire on the inside.

Does 18awg mean that it’s for 18 volts? i need it to extend the black and red cords for 12v speakers

In response to a previous answer, the smaller the gauge number, the bigger it is in diameter and the more amps it can handle. Each AWG size is rated for a certain amperage at a certain voltage. So to start, you should find out what voltage your system is running at. Then, look up a table of the maximum amperage at that found voltage. Finally, select a wire gauge that is over that limit. The further you go, the cooler it will stay and the safer it should be. For example, say we have a motor that uses 35 amps at 12 volts. According to a cart I looked up, at 12 volts AWG 12 gauge wire can handle 41 amps while AWG 14 is only rated for 32. Therefore, we should select AWG 12 gauge or higher to handle the load without burning up. There is a whole science and you can really get into the math of it but this is a good place to start. If you want to be safe, you can always go a bit higher and sacrifice a little extra cash for peace of mind. I hope this helps

Will this work in auto use? I'm replacing broken wires in a lighting harness on a pick up truck.

yes,auto use for lighting harness on a truck,this wire Bear Current 5A

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🔥 Power your projects with flexible finesse! 🔌

DUAL COLOR CODING - Includes 10 ft each of red and black for easy polarity identification and professional wiring.
PREMIUM COPPER CORE - Multi-strand tinned copper enhances conductivity and resists corrosion for long-lasting performance.
UNMATCHED FLEXIBILITY - Silicone insulation and 150 fine strands ensure effortless bending and routing in tight spaces.
COMPACT READY TO USE - 20 feet total length in sleek packaging, perfect for on-the-go professionals and DIY enthusiasts.
HEAT RESISTANT RELIABILITY - Rated for high temperatures, this wire keeps your projects safe and durable under stress.

Haerkn's 18 AWG silicone hook-up wire offers 20 feet of high-quality, flexible, and heat-resistant wiring with 150 strands of tinned copper, designed for professional-grade electrical applications requiring durability and precision.

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Colour	Red,Black
Brand	Haerkn
Material	Copper
Number of Cable Strands	Multi Strand
Gauge	18.0
Voltage	600 Volts
Manufacturer	Haerkn
UPC	754047498442
Country of Origin	USA
Model number	Haerkn
Item Weight	68 g
Package Dimensions	11.68 x 9.65 x 0.76 cm; 68.04 g
Item model number	Haerkn
Cable Interface	Flexible
Are batteries included?	No

Haerkn Electrical Wire 18 AWG 18 Gauge Silicone Wire Hook Up Wire Cable 20 Feet [10 ft Black and 10 ft Red] - Soft and Flexible 150 Strands 0.08mm of Tinned Copper Wire High Temperature Resistance (18

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