I need a new overdrive relay for my '57 Transtar (3E). The original part is a 1542260 and uses the 1685847 overdrive wiring harness. Studebaker International lists only the 1956 Relay, #1539595, which also uses the same overdrive wiring harness. Does anyone know for sure whether or not I could use the 1956 Relay on my '57? Both years are 12 volt and use the same solenoid. Any expert help is much appreciated.

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