Tractor cable light circuit checker

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage

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324133, G01R 3102

Patent

active

041662423

ABSTRACT:
A checker for the tractor cable which supplies power for semi trailer lights in which a light emitting diode indicates continuity. The checker is usable with positive and negative ground and in a preferred form also indicates polarity.

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patent: 3984765 (1976-10-01), Rocci

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