RV Designer double wall plate switch S657 White — raised bezel SPST on/off, compact RV fit

The RV Designer S657 is a white double wall plate assembly with a raised-bezel on/off SPST switch designed for reliable lighting and accessory control in RVs and marine interiors.

Made by RV Designer, a company steeped in RV interior accessories since 1993, the S657 combines a raised bezel, matching plate, and a single-pole single-throw (SPST) toggle to replace worn controls or to upgrade interior finishes. The compact, low-profile unit fits common RV mounting patterns and works for a range of functions such as cabin lighting, entry-step lights, and small appliance circuits. It’s built for easy installation and replacement with two terminals per switch for straightforward wiring.

How do I install the S657 in my RV wall plate cutout?

Installation is simple for anyone familiar with basic RV electrical work. Power must be turned off at the breaker, then remove the existing plate and switch, transfer the wiring, and fasten the new plate in place.

• Turn off 12V or shore power supply before starting.
• Unscrew original plate and detach the two switch terminals.
• Attach wires to the two terminals on the replacement SPST switch.
• Seat the raised-bezel plate and secure with screws supplied or existing fasteners.

What can this switch control inside my RV?

The S657 is intended for low-voltage DC and light AC accessory circuits commonly found in RVs. It’s ideal for on/off control of interior lights, step lights, and small appliances depending on your vehicle’s wiring and fuse ratings.

• Cabin and reading lights
• Entry or step illumination
• Auxiliary appliances within the switch’s amperage rating
• Replacement for worn or discolored factory switches

Why choose the raised bezel and double plate style?

The raised bezel adds a small lip around the toggle for a cleaner visual edge and helps reduce dust buildup at the switch seam. The integrated double plate provides a coordinated, finished look when replacing two adjacent functions while keeping wiring tidy.

• Raised bezel gives a neater transition between switch and wall surface.
• Double plate covers two openings for consistent styling.
• White finish blends with common RV interior color schemes.
• Compact footprint suits narrow or crowded wall spaces.

What wiring and ratings should I check before using this switch?

Confirm the circuit voltage and amp draw before connecting the S657. Although designed for typical RV accessory circuits, match the switch to the load and fuse size to avoid overheating or nuisance trips.

• Verify 12V DC or compatible circuit type before installation.
• Check that the switch’s amperage rating meets your load needs.
• Use proper connectors and secure terminal screws to prevent loose connections.
• Replace fuses or breakers with correct ratings after installation if needed.

Who is this for? The RV Designer S657 is aimed at RV owners, renovators, and service technicians who want a durable, attractive replacement for worn switches or an easy upgrade for interior fixtures. If you maintain your rig, manage an RV rental fleet, or simply want a tidy, functional control for lights and small accessories, this double wall plate with a raised bezel switch provides an affordable, straightforward solution that fits common RV layouts.