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GPT Automotive Primary Wire

GPT wire is a type of low voltage automotive primary wire. At Allied Wire & Cable, we carry GPT wire in sizes ranging from 8 AWG to 22 AWG. This wire features a stranded bare copper conductor and a PVC insulation that protects the wire from temperatures ranging from -40°C to +80°C. GPT wire is a general purpose automotive wire, as specified by SAE J-1128. It also meets the specifications to be used in Ford and Chrysler vehicles. Unlike other types of automotive primary wire, GPT is not designed to handle extended exposure to outdoor elements, so it is typically used for interior applications. Allied has multiple value-added services available for GPT automotive primary wire, including custom printing, striping, dyeing, twisting, cutting and stripping.

Part Number AWG SizeConductor StrandingNom. Insul. Thick. (in)Nom. O.D. (in)Approx LBS/MFTSAE Spec
GPT-22 22 7/30 0.023 0.0760 3.90 SAE J-1128
GPT-20 20 7/28 0.023 0.0840 6.20 SAE J-1128
GPT-18 18 16/30 0.023 0.0930 8.30 SAE J-1128
GPT-16 16 19/29 0.023 0.1020 11.50 SAE J-1128
GPT-14 14 19/27 0.023 0.1180 16.80 SAE J-1128
GPT-12 12 19/25 0.026 0.1410 25.20 SAE J-1128
GPT-10 10 19/23 0.031 0.1780 40.00 SAE J-1128
GPT-8 8 19/21 0.037 0.2180 63.00 SAE J-1128
Type GPT Wire (PVC)
Automotive Primary Wire

Type GPT Wire Features:

  • Conductor: Bare Copper
  • Insulation: Polyvinylchloride (PVC)
  • Options: GPT wire is available in solid colors and stripes with optional custom printing and/or numbering

Type GPT Wire Ratings and Approvals:

  • Temperature Range: -40°C to +80°C
  • Meets Ford (M1L-56A) and Chrysler (MS-3450) specifications

GPT Automotive Wire Applications:

  • Type GPT wire may be used whenever SAE J-1128 specifies general circuit wiring

*Available in drumpacks on many sizes

Customization Services for GPT Wire include: