07 Grand Marquis with the craziest electrical glitches.

1. The rear defroster switch and the door locks malfunction together. When one works…so does the other. When one doesn’t work, neither does the other. Comes and goes.

2. Door Ajar sensor: malfunctions off and on. All doors could be shut but the indicator is still on. Never constantly but comes and goes. Frustrating part is the ajar function overrides the display and keeps the interior lights on.

Welcome the advice.