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Black polycarbonate turn signal switch model 48522 with single connector

Grote

Grote 48522 Turn Signal Switch 12V 18A car electronics accessory

SKU CH-SQKT-SBGP3

A 12 V DC turn signal switch rated at 18 A for triple-trailer Freightliner trucks, FMVSS 108 compliant with a polycarbonate housing that plugs into the OE harness

  • TypeFuses & Accessories
  • Designed for triple-trailer setups
  • 12 V DC rating suits standard truck electrics
  • 18 A current capacity handles heavy lighting loads
  • Polycarbonate housing resists impact and weather
  • Meets FMVSS 108 safety standard

Grote 48522 Turn Signal Switch

The Grote 48522 is a 12V DC turn signal switch rated at 18A for Freightliner trucks. It features a polycarbonate housing and plugs directly into the OE harness. Designed for triple trailer configurations, it meets FMVSS 108 standards.

Integration with truck wiring

Mounting uses a separate worm gear clamp for secure attachment to the steering column. The single connector plugs into the existing factory harness without splicing. This frees up installation time and preserves the original wiring integrity.

Suits Freightliner fleets with triple trailers

Ideal for heavy-duty operators needing a direct-fit replacement for multi-trailer lighting control. Not suited for vehicles outside the Freightliner OE harness compatibility or applications requiring a different connector count or voltage rating.

Highlights

  • Designed for triple-trailer setups
  • 12 V DC rating suits standard truck electrics
  • 18 A current capacity handles heavy lighting loads
  • Polycarbonate housing resists impact and weather
  • Meets FMVSS 108 safety standard

Specifications

BrandGROTE
TypeFuses & Accessories

Questions about this item

Will the 18 A rating hold up on a triple-trailer rig running lights all day?

The switch is rated for 18 A at 12 V DC and is designed for triple-trailer configurations, so it should sustain continuous load within that limit.

Does the polycarbonate housing get hot or make noise during constant operation?

The switch has no moving fan or motor; the polycarbonate housing simply carries the 18 A circuit, so it runs silently and stays near ambient temperature.

My Freightliner already has the OE harness — is anything else needed to mount this 48522 switch?

It plugs into the existing OE harness and mounts with a separate worm-gear clamp, so no extra wiring or brackets are required.

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