Installing the Remote Panel
5.Using a jigsaw or other suitable tool, make a hole in the wall or bulkhead into which to insert the remote panel.
The hole should measure 3 1/4 inches (83 mm) across by 1 1/3 inches (33 mm) high, with at least 1 1/2 inches (40 mm) of depth to allow space for the remote panel cord to bend.
6.Plug the male end of the RJ11 extension cord into the XM 1800.
7.Route the RJ11 extension cord (through the wall or behind the bulkhead, if necessary) to emerge from the hole you prepared.
8.Plug the jack from the remote panel cord into the female jack on the extension cord.
9.Secure the remote panel to the wall with the two screws you removed earlier, or with similarly sized screws appropriate for your mounting surface.