Effective from 1st August 2019, we are pleased to announce that TRAILPARTS® has changed its legal status from a Partnership to a Private Limited Company, TRAILPARTS Ltd.
Relays & Load Devices
Towbar wiring often requires relays of various kinds depending on the vehicle in question and the needs of the vehicle and trailer electrical systems. These relays should be fitted by trained towbar technicians who are aware of the implications and understand what each relay does.
In addition, some modern vehicles with CANBus wiring systems can often work havoc with trailer lighting systems when the vehicle system does not recognise the lower current draw of LED lighting systems. TRAILPARTS® can help you to resolve these issues by advising on suitable LED load devices for your trailers, or LED-compatible vehicle towing electrics - please ask for more information!


Self switching relay 12V 40A 4 pin (30,86,85,87) NO
£6.95 (exc VAT) Each

Relay 7 way bypass 12V
£30.08 (exc VAT) Each

Plug-in smart load relay*
£88.56 (exc VAT) Each

LED lighting load resistor 12V 50W
£9.71 (exc VAT) Each

AFC C2 towing module for old style Transit wiring kit
£45.92 (exc VAT) Each

Relay 7 way bypass 24V
£49.64 (exc VAT) Each

Relay audible beeper
£5.15 (exc VAT) Each

LED lighting smart load device 12V
£20.54 (exc VAT) Each

Intelligent 12/24V indicator ciruit loading module LH RH
£86.54 (exc VAT) Each

Relay split charge
£10.46 (exc VAT) Each

Towing electrics 30A self switching relay
£21.56 (exc VAT) Each

Voltage dropper 24V to 12V DC-DC converter*
£147.25 (exc VAT) Each

Vehicle specific electrical kit 7 pin Transit van 00-14
£108.17 (exc VAT) Each

Intelligent 12/24 dual voltage loading module single channel
£54.57 (exc VAT) Each
