Find quality truck relays and flashers at Truckstop
Relays and flashers are vital components in a truck’s electrical system, controlling the flow of current and ensuring that circuits operate safely and efficiently. At Truckstop, our collection includes split charge relays, electrical relays, and flasher units designed to meet the needs of heavy goods vehicles.
Relays act as electrically operated switches, allowing a low‑power signal to control a high‑current circuit. This makes them essential for managing systems such as lighting, ignition, and auxiliary equipment, and ensures that power is delivered safely, preventing overheating and protecting sensitive components. Electrical relays are available in a variety of configurations, each tailored to specific applications, from starter circuits to auxiliary systems.
Split charge relays are particularly important for vehicles with multiple batteries, allowing a secondary battery to be charged while the engine is running, without draining the primary battery used for starting. This is especially useful for trucks with additional electrical loads, such as refrigeration units or in‑cab equipment, ensuring that auxiliary systems remain powered without compromising the vehicle’s ability to start.
Flashers are used to control the operation of indicator lights, providing the familiar blinking signal that alerts other road users. A reliable flasher unit is essential for safety, ensuring that indicators function correctly and remain visible in all conditions.
Truckstop’s relays and flashers are sourced from the top manufacturers, and are engineered to withstand vibration, temperature changes, and the demands of daily operation. With UK nationwide delivery, Truckstop makes it straightforward to keep your fleet’s electrical systems in top condition.
Frequently Asked Questions
What are the signs of a failing relay in a truck?
Common symptoms include intermittent operation of electrical systems, clicking noises without activation, or complete failure of the circuit.
When should a split charge relay be used?
Split charge relays are recommended when a truck operates with multiple batteries, so that auxiliary batteries are charged without draining the starter battery.
Can a faulty flasher unit affect road safety?
Yes. A failing flasher can cause indicators to blink irregularly or stop working altogether, reducing visibility and increasing the risk of accidents.
How can I tell if the relay or flasher will work with my truck?
Simple. If you add the item to your cart, and let us know your vehicle registration using the option on the cart page, we'll check the part fits before we process your order. If it doesn't match the vehicle, we'll get in touch to discuss your options.
When will I receive my order?
At Truckstop, we offer several tailored delivery solutions. We offer same-day delivery on all parts in stock placed before 11am to Worcestershire, Warwickshire, Herefordshire & Gloucestershire. For orders to the UK mainland, we offer next-day delivery by courier. You can learn more about our delivery solutions here.
