This Road Power 18-gauge primary wire in red provides reliable 12V low-voltage wiring for automotive, marine, RV, and trailer electrical systems. Built to SAE J1128 GPT spec with full-gauge stranded copper conductors and a flexible PVC insulation jacket - the workhorse single-conductor wire that runs from the fuse panel out to lights, accessories, sensors, and chassis ground returns.

• 18 AWG stranded copper conductor - full-gauge (not CCA copper-clad aluminum)
• Color: Red
• Length: 33 Ft
• Current capacity: approximately 10 amps continuous at 12V DC (SAE J1128 GPT general-purpose chassis wiring)
• Operating voltage: 60 VDC / 25 VAC max
• Temperature rating: up to 185 deg F (85 deg C)
• PVC insulation jacket resists abrasion, water, oil, gasoline, and battery acid
• For automotive, boat, truck, RV, trailer, and 12V accessory circuits
• Meets SAE J1128 standards - RoHS compliant

Tip: Use 18-gauge for LED accent lights, dash indicators, low-current sensor pickups, gauge backlight power, instrument-panel illumination. Always fuse the circuit at the battery end - fuse rating should match the wire current capacity, not the load (e.g. 18 AWG runs on a fuse no larger than ~10). For longer cable runs, step up one gauge size to compensate for voltage drop: at 12V, every 1.5% voltage drop matters. Red typically marks 12V positive feeds, fuse-protected hot leads, battery cable to fuse panel, switched accessory power.

FOR CALIFORNIA SHOPPERS

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• ⚠  WARNING: This product contains material that the State of California has determined may cause cancer birth defects or other reproductive harm. www.P65Warnings.ca.gov/product