Transbrake Input Protection Module - 554-128 transmission-lines 2L V8 1974 GMC C25/C2500

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Transbrake Input Protection Module - 554-128 transmission-lines 2L V8 1974 GMC C25/C2500Overview: 554 128 is a device that allows for an ECU input to be safely connected directly to the +12V side of the transbrake solenoid. This device protects the ECU input from damaging flyback voltage which occurs when the transbrake is released. Not using this device will cause damage to the ECU over time. Features: 554 128 is a device that allows for an ECU input to be safely connected directly to the +12V side of the transbrake solenoid. This