A switch is used to turn dc direct current motor forward and reverse. So here we are using a simple dpdt relay arrangement for polarity alternation.

Cheesycam Diy Auto Reverse Polarity Motorized Video Slider
Dc motor reversing relay. A dc motor reversing circuit using non latching push button switches. Also used on hoists hatches winches snowplows intakeexhaust fans vehicle outriggers and other reversing applications. Module automatically reverses the direction of the motor when the appropriate control circuit is energized with a pulse from a control switch. Dc motor reversing circuit using dpdt relay the direction of a dc motor can be controlled with the input polarity at the motor terminals. Two one way switches used. And the second switch which is connected in the way of positive wire is used for switch onoff the motor.
Relays control forward stop and reverse action and the motor cannot be switched from forward to reverse unless the stop switch is pressed first. Forward reverse relays datasheet ideal for tarp or lift applications. In the circuit the motor terminals are connected between the two common poles of the relay. New 12v winch motor intermittent duty reversing solenoid dc contactor relay switch 24450 24450bx 214 1211a11 214 1211a11 06 214 1211a51 214 1211a61 214 1231a11 50 out of 5 stars 1 1395 13. In the above forward reverse dc motor using relay double pole double throw relay wiring diagram.