Exterior Lighting & Electrical Parts for Bus/Minibus Builds: Selection Checklist (B2B)

Quick Checklist

• Vehicle: make–model–year + body variant
• Voltage: 12V or 24V (avoid mixing)
• Application: exterior / interior / electrical accessory
• Fitment: dimensions, hole spacing, left/right, connector type
• Protection: moisture, vibration, cable-entry sealing
• Stock: markers, connectors, fuses/relays, common LED modules

1) Lighting Scope: What Parts Are Included?

• Headlamps: low/high beam, DRL (if applicable)
• Tail/stop/turn/reverse: rear visibility and safety
• Marker / side marker: side visibility at night
• License plate lamp: small part, frequent replacement
• Interior lighting: ceiling/reading lights (project-dependent)
• Electrical parts: wiring, connectors, fuses/relays, switches

2) 12V vs 24V: The #1 Compatibility Risk

• Rule #1: voltage line is mandatory in every RFQ
• Rule #2: if mixed-voltage exists, list it explicitly (rare)
• Rule #3: verify connector pinout and polarity with photos

3) Sealing, Moisture & Vibration

• Cable entry point: the most common leak path
• Lens/body seam: long-term cracking or loosening risk
• Vibration: loose connectors cause intermittent output
• Mounting torque: overtightening can crack housings

4) Fitment: Dimensions, Connectors, Mounting, Left/Right

• Position: front/rear/side/interior
• Left/Right: specify if applicable
• Dimensions: overall size + mounting hole spacing
• Connector: pin count + photos (front/back)
• Cable length: if needed

5) QC: Output, Lens, Wiring

• Output: even distribution, no flicker
• Lens: scratches/cracks, optical distortion
• Connector: loose pins cause intermittent output
• Cable: insulation and sealed entry
• Label: item code + voltage + left/right info

6) Stock Planning

• Marker / side marker
• License plate lamps
• Connectors and sockets
• Fuses and relays
• LED modules / bulbs (by your standard)

Copy-Paste RFQ Template (Lighting & Electrical)

Subject: RFQ – Lighting & Electrical Parts – [Vehicle Model] – [Project Name]

Hello,

Please quote lighting and electrical parts for our bus/minibus project:
- Vehicle: Make–Model–Year / Body variant: ...
- Voltage: 12V / 24V
- Position: Front / Rear / Side / Interior
- Parts list:
  1) (Name / code) ...
  2) ...
- Fitment: dimensions + mounting hole spacing (photos attached)
- Connector: pin count + connector photos (front/back)
- Left/Right: ...
- Qty: ...
- Shipping: ...

Please include unit price, lead time, packaging standard, and payment terms.
Thank you.
    

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