The Genie 20418R.S Brown Down Limit Lead is a genuine OEM replacement wire lead for select Genie residential garage door openers. It carries the down limit signal from the opener’s limit switch/sensor circuit to the control board so the motor knows exactly when to stop at the fully closed position. If your door stops short, won’t close consistently, or shows visible damage to the existing brown lead, replacing this part can restore accurate down travel control and help maintain reliable day-to-day operation.
This replacement lead is color-identified for the down circuit and is intended for Genie openers that use separate up and down limit leads. For correct fit, verify 20418R.S in your model’s parts diagram or owner’s manual. Installation typically involves disconnecting power, removing the original lead at the limit assembly and control head, routing the new lead along the existing harness path, and then confirming or re-setting travel limits per your specific Genie programming instructions. Always disconnect power before servicing and test door balance, Safe-T-Beam sensors, and safety reversal after installation. This OEM Genie replacement part is ideal for maintenance, repair, or troubleshooting the down limit function on compatible Genie garage door opener systems.