Catalog | Electrical Components | Wire | Primary Wire GPT-PVC Jacketed | Primary Wire - 100 ft spools
Primary Wire - 100 ft spools
GPT-PVC Jacketed





Primary Wire

Traditionally, 14 gauge has been the most popular size of primary wire used. However today’s tractor and trailer 7-way wiring systems use 12 gauge wiring for lighting, 10 gauge wiring for the stop lamp (red) and ABS (blue) circuits and an 8 gauge wire to provide an adequate ground return. All new tractors and trailers must be equipped with these sizes of wiring to provide the necessary power to support lighting & ABS systems.

When you’re wiring using primary wire, it is important to at least match the wire sizes used in the rest of the circuits. Most wiring in newer tractors and trailers will be 12 gauge or higher.

  • SAE J1128 compliant
  • GPT type
  • Jacket resists grease, oil, and acid
  • Annealed and bunched copper core
  • -40°F (-40°C) to 176°F (80°C)
Part Number Stock Code
Gauge
Color
718-01
33153
18
Black
718-02
33154
18
Blue
718-03
33155
18
Brown
718-04
33156
18
Green
718-044
33157
18
Orange
718-05
33158
18
Red
718-06
33159
18
White
718-07
33160
18
Yellow
716-01
33121
16
Black
716-02
33123
16
Blue
716-03
33124
16
Brown
716-04
33125
16
Green
716-044
33126
16
Orange
716-05
33127
16
Red
716-06
33128
16
White
716-07
33129
16
Yellow
714-01
33077
14
Black
714-02
33079
14
Blue
714-03
33080
14
Brown
714-04
33082
14
Green
714-044
33083
14
Orange
714-05
33086
14
Red
714-06
33088
14
White
714-07
33090
14
Yellow
712-01
33033
12
Black
712-02
33035
12
Blue
712-03
33037
12
Brown
712-04
33038
12
Green
712-044
33039
12
Orange
712-05
33041
12
Red
712-06
33043
12
White
712-07
33045
12
Yellow
710-01
33009
10
Black
710-02
33011
10
Blue
710-03
33012
10
Brown
710-04
33013
10
Green
710-05
33014
10
Red
710-06
33016
10
White
710-07
33017
10
Yellow
708-01
33001
8
Black
708-05
33002
8
Red



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