Sunrise Medical Quickie Q50R Service Instructions Manual page 22

Fig. 6.2.26
4. Remove brake (D) from the motor assembly
NOTE: If finding your old brake doesn't have the connector but is
hardwired then take the following steps:
1. Cut cable to remove old brake leaving enough to reconnect new
brake.
2. Either add new connector to cables from existing motor or
remove connector from new brake and solder wires from existing
motor.
3. Cover soldered joint with heat shrink using heat gun.
22 Q50R REV.A