Back glass you put the rubber on the bead weld, Put your glass in. Its a tight fit. After you get the glass seated in the strip install the lock strip. Use the black one if it doesn't matter. I could not get the chrome one from lmc to fit, and had to take it to a local shop with a lockstrip tool to install it. Use a wood or plastic window knife you can get at any auto store and apply steady and even pressure to the glass being careful not to flex it. With the knife work your strip lip over the glass starting with the lower corner, across the bottom, up the sides and across the top. You may need to lubricate the glass channel in the strip. I used WD40 some will use soapy water. Good luck.
