Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Wring sensors Does anyone have a wirng diargram for the "eyes". For some unknown reason the previous owner disconnect the sensors and I am not sure how to connect the wires again. The door opener is a Craftsman 1/2 HP, model 134,18876, purchased from Sears Canada about 7 years ago. It also will only go down a few inches unles I hold the down button until the door reaches the floor.

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  • marc38 Feb 09, 2009


    Thanks for the info. I connected as you suggested and found out the "receiver" module does not have a green light. To make sure it was the "receiver" I switched them around and it confirmed the "receiver" green light does not come on. Any idea where I might find a replacement?

    Thanks again

  • marc38 Feb 10, 2009


    Thanks again. I will try to find a set at a local dealer, if not I'll go to Sears Parts.




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Whites together under 2nd screw, grays together under 3rd screw. both indicator lights (normally LED's) on the eyes (1 each) must be lit in order to operate. this is the basic set-up...if you give me your model number from the opener, I should be able to find a owners/users manual for the unit

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Posted on Feb 09, 2009

  • clarkco2002 Feb 10, 2009

    safety eyes are generally sold in pairs. The model # in your post does not show up in any data base I can access, including sears. Check the model # and go to or any GDO installer in your area should be able to point you in the right direction for a local source.



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