Heavy Truck Fleets
Heavy truck fleets operating European, Japanese and Chinese chassis in mixed fleets face consistent electrical failures in flasher relays, starter relays, door and brake switches, and sensor units. These components are critical to
What Goes Wrong in This Application
Pain Points
- Flasher relays failing due to high duty cycle on long haul routes, especially on older Renault and Volvo models
- Starter relays worn out by repeated cold starts in winter conditions across multiple chassis types
- Inconsistent relay pin counts and voltage ratings when sourcing from multiple suppliers
- Lack of a single source for OEM cross-referenced electrical parts across European, Japanese and Chinese truck brands
- Delays in receiving replacement parts for discontinued or legacy truck models still in service
What Buyers Need
- A single supplier who can provide exact OEM cross-references for flasher relays, starter relays and switches across Renault, Volvo, MAN, Mercedes-Benz, SCANIA and other brands
- Relays and switches that match the original pin count, voltage and connector type without requiring rewiring
- Consistent supply of the same part number over time to standardise depot inventory
- Testing and certification traceability for parts used in safety-critical systems
- A warranty that covers parts stored in depot stock, not just those already fitted
Recommended Parts
83 catalogue items map to this application.












Typical Scenarios
- Depot maintenance team replacing flasher relays across a mixed fleet of Renault, Volvo and MAN trucks
- Fleet operator sourcing starter relays for a batch of older Mercedes-Benz and SCANIA trucks still in daily service
- Procurement team consolidating a single order for 15 different relay and switch types across multiple OEM numbers
- Body builder fitting new lighting and alarm systems on a new Volvo chassis using original part numbers
- Aftermarket distributor stocking relays and sensors for both European and Chinese truck models under one brand
How an Order Runs
Send the OEM part numbers and connector photos from the original units in service
We confirm the voltage, pin count and function against each part and provide a full quote
Free samples are sent so the depot can fit and test the parts before placing a volume order
Order confirmed with agreed packaging, labelling and delivery date in writing
All units are function tested before delivery and shipped as one consolidated order
Delivery and Terms
- 7 to 10 working days on fast moving items held in stock
- Up to 40 days on production orders
- Neutral packing, customer branded or CHINO branded box
- T/T, D/P, L/C, PayPal, Western Union or Alibaba Trade Assurance
- 12 month warranty from B/L date
Solutions
OEM and ODM Development
Build your own part number from a sample, a drawing or a failed original, made on the same line as our catalogue range.
Private Label and Packaging
Put your own brand on the box without changing supplier, part number or lead time.
Quality Assurance and Testing
What is actually tested, what it is tested with, and what happens when a part fails in the field.
Sourcing and Logistics
How an enquiry becomes a delivered container, with the payment and lead time terms stated up front.
Related Guides
How to Choose a Flasher Relay for Heavy Trucks
A flasher relay controls the on-off cycle of the turn signals in a commercial vehicle. It receives a signal from the steering colu
Truck Starter Relay Failure Symptoms and Diagnosis
A starter relay is the high-current switch in the starting circuit. When the ignition key is turned, the relay closes a heavy cont
Brake Light Switch and Back Lamp Switch Explained
The brake light switch is a safety device that closes the circuit when the brake pedal is pressed, sending power to the stop lamps
Questions From Heavy Truck Fleets Buyers
Can you supply flasher relays for trucks no longer in production?
Yes. Work from the number on the original unit rather than the chassis year. Send us the part number and a photo of the connector and we will confirm if it is in the catalogue.
Do you supply starter relays for both 12V and 24V systems?
Yes. All starter relays are listed by voltage and current rating. Confirm the OEM number and we will verify the correct specification.
Can I order a mixed list of flasher relays, switches and sensors together?
Yes. Depots and distributors usually consolidate one order across multiple part types. Send the list of OEM numbers and we quote it as a single shipment.
What is the minimum order quantity?
10 pcs per catalogue item, and small trial orders are accepted.
How are the parts tested?
Every part is function tested before delivery and performance parameters are checked in our own laboratory. Production follows the IATF 16949:2016 documented process.
What warranty applies to parts stored in depot stock?
12 months from the B/L date, so stock held in stores is still covered when it is fitted.
Do you provide samples before a fleet order?
Samples are free of charge and you cover the freight. Fit and test them on a vehicle before placing the volume order.
Send Your Heavy Truck Fleets Parts List
Give us the OEM numbers from the vehicles in service. We confirm each one, send free samples, and quote the whole list as one order.

