Seller notes

Electronic control box for M939 series trucks. New/unused. P/N 11669304, 12450333, SX75G3. NSN 6110014442546. Made in USA. This control box provides reverse polarity protection, controls/protects alternator output (60 amp units only), controls power to starter motor solenoid, locks out start circuit when transmission is not in neutral or if engine is running. This control box uses the AC sense off the alternator to determine if the engine is running. Do not substitute p/n WSU4001UT. This part re...

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