JR Products 05-12315
Compact LED-approved side slider designed for 12-volt lighting; check whether the lamps themselves are dimmable.
Identify JR Products RV Dimmers by LED Rating & Switch Size
A black RV dimmer can look almost identical to another model while controlling a different lighting load. JR Products' LED-approved models, older 15-amp slider and rotary control should be identified by their exact numbers, cutout dimensions and wiring. Check your original lighting before replacing the switch.
Find the right dimmer by function and MPN
The LED column distinguishes confirmed LED-approved controls from the older 12275 and the rotary model whose LED approval has not been established.
| MPN | Control type | Rating | LED suitability | Cutout |
|---|---|---|---|---|
| 05-12315 | Side-slide LED dimmer | 10A at 12V DC | Yes | 1.625 × 1.75 in |
| 12275 | Older button/slider dimmer | 15A at 12V DC | No | 1.75 × 2.25 in |
| 15205 | On/off slider LED dimmer | 10A at 12V DC | Yes | 1.75 × 2.25 in |
| 15225 | On/off slider LED dimmer | 10A at 12V DC | Yes | 1.75 × 2.25 in |
| 15235 | Rotary on/off dimmer | 15A (12V listing) | Not established | 2.56 × 1.68 in |
LED compatibility matters. JR lists 05-12315, 15205 and 15225 for LED dimming. The older 12275 is not recommended for LED use. LED suitability is not established for the 15235 rotary model by its available manufacturer specifications; confirm the exact lamps and driver before choosing it.
Inspect the original before replacement
- Identify the lights: select a dimmer approved for the existing LED lamps or the specified non-LED lighting system.
- Read the exact number: the old 12275 slider is 15A but not recommended for LED lamps; 15205/15225 are 10A and LED approved.
- Measure the mounting cutout: 05-12315 needs 1.625 × 1.75 inches, 12275/15205/15225 use 1.75 × 2.25 inches, and 15235 requires 2.56 × 1.68 inches.
- Check the wiring: the 05-12315 and 15205/15225 have three-wire information; the 15235 listing identifies a two-wire installation.
- Confirm load and control: a white rotary dimmer is not automatically suitable for LED use or for a motor circuit.
Faceplate dimensions: 05-12315 measures 2 × 2.875 inches overall. The 12275/15205/15225 controls measure about 2.82 × 3 inches overall, and 15235 measures 3.56 × 2.16 inches. These differ from the corresponding wall cutouts above.
Exact catalog product listings
These links open the exact UsedRVParts catalog products. Check each item's stated condition and availability; viewing or pickup in Kelowna is by appointment.
JR Products 12275
Legacy 15A dimmer not recommended for LED loads; do not choose it for LED lighting solely because the faceplate fits.
JR Products 15205
White LED-approved dimmer with an on/off control, distinct from the older 12275 model.
JR Products 15225
Black LED-approved counterpart to 15205; same nominal cutout and rating.
JR Products 15235
Rotary brightness control with a different panel cutout; confirm lamp compatibility before using with LEDs.
Related RV electrical references
For a motor-control switch instead of a lighting dimmer, see the JR slide-out switch identification reference. Lighting dimmers should never be substituted for slide-out motor switches.
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