Connectors and Wiring Harness Requirements 5.1.6 Wire Type and Gauge Size 5.1.6.1 Wire Selection Wire must be of a type suitable for the application. Wire must be selected so that the rated maximum conductor temperature is not exceeded for any combination of electrical loading, ambient temperature, and heating effects of bundles, protective braid, conduit, and other enclosures. Typical factors to be considered in the selection are voltage, current, ambient temperature, mechanical strength, connector sealing range, abrasion, flexure, and extreme environments such as areas or locations susceptible to significant fluid concentrations.
5.1.6.2 Wire Size The minimum conductor size used on Caterpillar products is 0.8 mm 2 (18 AWG). Smaller conductors are susceptible to breakage and fatigue failures. SAE J1614, wiring distribution systems for construction, agricultural, and off-road work machines require wire sizes no smaller than 0.8 mm 2 (18 AWG).
I N D U S T R I A L E N G I N E E L E C T R O N I C S 30 Wire Usage (AWG-type) Contact Type Plating Cat P/N ECU Connector (J1) #16/ #18 - SXL and #14/#16/#18 - GXL Socket Stamped & Formed Gold 126-1766 #14 - All Socket Machined Gold 126-1768 #16/#18 Socket Machined Gold 9X-3402 HD-10/DT Connector (Standard) #14 Socket Machined Nickel 9W-0844 #14 Pin Machined Nickel 9W-0852 #16/#18 Socket Machined Nickel 186-3736 #16#18 Pin Machined Nickel 186-3735 #14 Socket Machined Gold 126-1768 #14 Pin Machined Gold 126-1767 #16/#18 Socket Machined Gold 9X-3402 #16/#18 Pin Machined Gold 9X-3401 DT Connector (J1939 only) #16/#18 (J1939) Socket (extended) Machined Gold 133-0969 #16/#18 (J1939) Pin (extended) Machined Gold 133-0967