Installed GPS antenna. The interface plate was the wrong size for the antenna, so installed antenna directly on the tray with screws.
Installed rollbar light. Used rubber grommet to prevent chafing of wires.
Troubleshot the elevator trim. Problem turned out to be an intermittent connection on the spade connections at the tail. Will replace with gold pins and 9-pin connector, a method preferred by Aero-electric.