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Learn how ECU terminal pins are selected by cavity, pitch, wire, crimp and mating evidence, with practical checks for automotive harness buyers.

Compare pin terminals by wire range, insulation support, crimp tooling, retention, mating geometry and inspection evidence.

Choose a PCB pin header by pitch, orientation, termination, shrouding, footprint, mating housing and inspection evidence.

Select a 3 pin fan header by pitch, keying, mating direction, PCB footprint and inspection needs without assuming unsupported compatibility.

Compare female-to-female pin header arrangements, pitch, stack height, termination and inspection checks without inventing pinouts or ratings.