CURT Automotive Primary Wire, 2-Bond Black, Blue 250' Spool Model 57033CURT Automotive Primary Wire, 2 Bond Black, Blue 250' Spool Model 57033 CURT automotive primary wire is engineered for dependable performance, boasting a 12 gauge, 2 wire bonded system to ensure reliable connectivity in trailer setups. With standard trailer wiring colors of black and blue, it simplifies rewiring tasks. Rated for 60 volts, it's perfect for both trailer rewiring and automotive electrical repair applications. Its robust design withstands