The source lists 2019–2024 A-Class 177, CLA 118, GLB 247, GLA 247 and B-Class 247. The illustrated installation uses an A-Class with factory ambient lighting. Match the supplied light-guide shape to the actual seat-back trim and confirm whether the vehicle's ambient lighting is factory-installed or aftermarket before choosing the LED heads, adapter and module.
The source describes 64-color synchronization, multicolor and breathing modes, and operation without programming when the correct lamp version matches the vehicle. These features depend on the vehicle's lighting configuration and the supplied kit version. The illustrated A-Class seat and parts sheet do not establish that the same parts or connections fit every seat, AMG variant or equipment level in the listed range.
1. Identify the parts and lighting version
The parts sheet identifies:
- 01: seat-backrest light strips / light-guide assemblies.
- 02: ambient-light module.
- 03: adapter lead.
- 04: power lead.
The pictured module label identifies an ambient-light LIN control module for matching factory ambient lighting, marked “YC,” CKCP V1.0, dated 2024/07/15. Confirm its exact kit application before connecting it. The other chassis numbers printed on that module label are not additional seat-backrest fitment instructions for this article.
Keep the factory-compatible and aftermarket-compatible lamp arrangements distinct. A similar-looking plug or a matching wire color does not establish the correct lighting protocol.
2. Fit the light guides to the seat-back trim
Read the photographs from top to bottom:
- Feed the main lead into the middle of the illustrated seat-back trim gap first. The source says the seat-back panel does not need to be removed for this example.
- Insert the light guide progressively from both sides toward the middle.
- At the left side, keep the light guide at or below the seat-back panel surface; it must not stand above that surface.
- At the middle, seat the light guide inside the trim gap as illustrated.
- At the right side, position the assembly so the LED head is concealed when installation is complete.
- Tuck the lead along the outside edge of the seat-back panel, following the dashed route in the photograph.
- Check the lighting functions and colors after connection.
This sequence inserts the light guide into the trim gap. It does not instruct removal of the entire seat, cutting the upholstery, or dismantling the seat-back panel's retaining clips. The photos do not show a complete lower-seat connection route or the clearances around seat mechanisms and existing wiring. Confirm that route for the actual seat version before securing the lead; keep it clear of moving parts and pinching points throughout seat adjustment.
3. Select the correct connection arrangement
This photograph specifically shows the version for aftermarket ambient lighting: ordinary four-wire RGB LED heads and ordinary ambient-light connectors. Its source caption says to connect this version to the rear footwell ambient-light connection below the seat. It is not a command to connect a separate module simply “after matching.”
For the factory-ambient-light-compatible seat lights, the article specifies the under-seat footwell ambient-light connection and says not to adapt them from another location. The source does not provide a verified connector part number, cavity map or measurement procedure for that connection. Confirm the correct kit and vehicle connection before plugging in or altering the wiring.
If the lights do not illuminate, first check whether the lamp version, adapter and vehicle lighting configuration match. Do not substitute the illustrated four-wire aftermarket arrangement for a factory-protocol arrangement by appearance alone.
4. Check lights that remain white
Close all four doors and switch off the overhead cabin-light switch illustrated in the photograph, then check the seat lights again. The source says that continued white-only operation after those checks indicates a mismatch between the LED-head program and the vehicle and calls for a matching replacement LED head.
Verify the supplied lamp version and the actual vehicle configuration before ordering that replacement. This check does not identify a universal programming file or authorize changing the vehicle's coding.
5. Imported AMG connection example
The source describes a different arrangement for examples including imported A35, A45 and GLB AMG vehicles: use a matching module adapted from the door and ordinary LED heads, because the factory ambient-light protocol differs in those examples.
The photograph shows the module location near the right-front door and an inline adapter at the right-front door-control module connection marked 3#. It also marks a reserved connector to be wrapped and left unused. “3#” identifies the illustrated module connection; it is not an instruction to connect to cavity or pin 3.
Confirm the actual AMG vehicle, module revision and adapter connection before using this arrangement. The photograph does not supply a terminal-by-terminal wiring map, the door-panel removal procedure or a complete route from that module to the seat lights. Do not apply this example automatically to every imported vehicle or AMG model.
6. Identify the first illustrated wire-color variant
The source gives the following correspondence for the specific white and black connectors shown in this photograph:
| White-plug lead | Black-plug lead in this image |
|---|---|
| Yellow | Green |
| Green | Red |
| Red | Black |
| Blue | White |
Use this table only after identifying this exact adapter variant and connector orientation. It is not the same color correspondence as the next image. The photograph's physical markings do not provide a verified vehicle connector cavity map, supply voltage or connection method.
7. Identify the second illustrated wire-color variant
The article's written color example corresponds to this second photograph:
| White-plug lead | Black-plug lead in this image |
|---|---|
| Yellow | Yellow |
| Red | Green |
| Green | White |
| Blue | Red |
In this example, the source identifies the kit's yellow lead as positive and its red, green and blue leads as the corresponding color channels. These descriptions belong to the illustrated kit arrangement. They do not establish an international wire-color standard or a rule for other vehicle or aftermarket harnesses.
Identify which of the two adapter variants is actually supplied before using a table. If the connector, lead colors or lamp version differs from both photographs, obtain the exact kit diagram and connector orientation before joining or moving contacts. Do not combine the two tables or choose a connection by color alone.
Final checks
Confirm that the light guides remain seated at the illustrated height, the LED heads are concealed, the wiring stays clear of moving seat parts and pinching points, and the seat lights follow the intended ambient-light colors. Check the white-only behavior with the doors closed and cabin light off. If the lighting is absent or incorrect, verify the kit version and the selected factory, aftermarket or imported-AMG connection arrangement before changing parts or wiring.