Could the terminals come attached on both sides of the 3 wires please?

The terminals don’t come attached on both ends because different vehicles need different lengths of wire. You can simply use a hammer and a blunt chisel to crimp the terminal end into place onto the copper wire after using a utility knife to remove a section of the protective casing, after you cut your wire to the length you need for your vehicle.

What fuse can I use for this wire??

I would use at least a 250 or 300 amp fuse. This wire is massive!

What size is the ring opening 5/16 or 3/8?

Know this is late. But last time I checked 1/16+3/8=7/16. (28/64). ***3/8+1/64=25/64**** With small fluctuations in thickness of the insulation, I would disregard that 1/64 as it pretty minuscule, and go with 3/8. We’re not building a motor here to need one hundredth or thousandth of an inch measurement increments.

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Description

⚡ Upgrade your ride’s heartbeat with the ultimate Big 3 wiring kit!

COLOR CODED PRECISION - Green power wire and black ground wires with matching heat shrinks for foolproof, professional wiring.
PURE OFHC COPPER GAUGE - Experience superior conductivity with 1/0 AWG oxygen-free copper wire for maximum power flow.
OPTIMIZED BIG 3 UPGRADE - Includes 3 pre-crimped 4ft runs—1 power (green) and 2 grounds (black)—for seamless installation.
ALL AMERICAN CRAFTSMANSHIP - Proudly made in the USA with premium copper lugs and heat shrinks ensuring unmatched durability.
BUILT FOR HIGH PERFORMANCE AUDIO - Designed specifically to enhance your car audio system’s power delivery and reduce voltage drop.

The GP Car Audio Big 3 Upgrade Wiring Kit features 1/0 AWG oxygen-free copper wire with three 4ft pre-crimped runs—one green power cable and two black ground cables—equipped with pure copper lugs and heat shrinks, all proudly made in the USA. Engineered to optimize your car audio system’s power efficiency and reliability.

€ 238.69

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Brand	GP Audio
Connector Type	Male Dc Power Jack (Green) and Female Dc Power Plug (Black)
Cable Type	vehicle-amplifier-power-and-ground-cables
Compatible Devices	Car Audio Systems
Color	1 Green, 2 Black
Connector Gender	Male-to-Female
Number of Pins	3
Unit Count	1 Count
Indoor/Outdoor Usage	Indoor, Outdoor
Maximum Voltage	12 Volts
Manufacturer	GP Audio
Item model number	GP-B3-OFC10G-BK
Is Discontinued By Manufacturer	No
Manufacturer Part Number	GP Big 3 1/0-G

GP Car Audio Big 3 UPGRADE wiring Kit OFC TRUE 1/0 AWG GAUGE GREEN and BLACK

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