Standard Ignition LS-348 Back Up Light Switch

Brand Standard Ignition LS-348
Connector Gender Female
Terminal Gender Male
Terminal Type Pins
Fits Ford · 5 vehicles

Copper alloy conductors. Deliver strong conductivity with low resistive losses.

100% tested. Verifies mechanical and electrical switching performance.

Robust design. Built with high-grade materials for service demands.

Cross-references 1S4Z15520AA, 1S5268 and 53-11640 for the same application. See all 9.

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Standard Ignition LS-348 Back Up Light Switch

Standard Ignition LS-348 is a back up light switch built for reliable reverse-lamp operation on compatible Ford Focus models. It uses a female connector, male pins, and a single 2-terminal layout to support consistent electrical switching in the backup light circuit.

Key Features

  • Fits 2000-2004 Ford Focus
  • Back up light switch for reverse lamp circuit control
  • Female connector with 1 connector interface
  • 2 male pin terminals for direct electrical connection
  • Copper alloy conductors for strong electrical conductivity and reduced resistance
  • 100% tested for mechanical and electrical switching performance
  • Robust construction with high-grade materials for service use

Product Details

The Standard Ignition LS-348 is engineered for Ford Focus back up light switch replacement applications from 2000 through 2004. It is built with copper alloy conductors to help maintain stable current flow, while the tested switching design supports dependable activation of the reverse lights when the transmission is placed in reverse. This part cross-references F4012 for the same application.

Common Issues This Part Can Address

  • Reverse lights that do not illuminate when shifting into reverse
  • Intermittent backup lamp operation
  • Electrical switching faults in the reverse light circuit
  • Corrosion or wear at the original switch terminals
  • Failed switch response during transmission reverse engagement

Installation Notes

Verify connector style, terminal layout, and vehicle application before installation. On 2000-2004 Ford Focus models, confirm the switch location and inspect the harness connector for damage, bent pins, or corrosion before connecting the replacement part. Use the vehicle service procedure for proper adjustment and electrical verification after installation.

Quality Assurance

Standard Ignition builds this LS-348 back up light switch with durable materials and conducts electrical and mechanical testing to confirm switching performance. The design reflects the brand’s long-term focus on technician-oriented service parts and dependable circuit control.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionPositionNotes
2004FordFocusN/A
2003FordFocusManualN/A
2002FordFocusManualN/A
2001FordFocusManualN/A
2000FordFocusManualN/A
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1S4Z15520AA1S526853-1164019145726F4012NS280NS16651NS19281SW5714