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Curt PWM Powered Converter Module - STT - Circuit Protected with Wiring Kit
What is Pulse Width Modulation (PWM)?Pulse Width Modulation (PWM) wiring systems sometimes called Multiplex are systems that vary the signal intensity over one wire to initiate more than one lighting function - like running or stop lights. There are two types of PWM systems ST and STT. ST systems have one wire that contains both stop and tail functions and a separate wire on each side that contains the turn signal functions. STT systems have one wire that contains stop tail and turn functions.
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