We mounted our ACK E-04 406 MHz elt under the "arch" support for the rear lithium battery, solenoid, and fuse "platform". The remote Doug mounted on the right top of the instrument panel. By removing the glare shield, the lithium battery for the remote is easy to replace. On the right top of the instrument panel, we mounted the remote ELT control panel with a TEST button, LED which flashes when ELT is activated. On the backside is a rectangular box housing an audio alarm when the ELT trips, either during a test or when the G-switch in the main unit in the back is tripped.