1. To turn on buttons illumination, negative ground (-) is applied to terminal no. 1 (orange wire terminal) and positive power (+) is applied to terminal no. 4 (grey wire terminal). The buttons illumination is not necessary for Homelink to work.

2. For Homelink, negative ground (-) is applied to terminal no. 2 (blk wire terminal) and positive power (+) is applied to terminal no. 5 (green wire terminal).