Does this pump require any wiring changes, or does it plug straight into the factory connector?

Connector type and wiring compatibility not specified — verify your current pump connector before ordering to confirm fit. Bring the old unit or snap a photo of the connector for reference.

Will the fluid level sensor work with my existing dash warning system?

The sensor is designed as a direct replacement with integrated level monitoring. If your dash warning light is currently non-functional due to a failed sensor, this assembly should restore that function — but test after install to confirm.

What's the best way to prep the reservoir before installing this pump?

Drain old washer fluid and flush the reservoir with clean water to remove sediment or debris that could clog the new pump intake. Let it dry completely before installation to avoid contaminating the new unit.